diff --git a/libk3b/plugin/k3baudiodecoder.cpp b/libk3b/plugin/k3baudiodecoder.cpp
index deb5bfdb1..e6bb8e97d 100644
--- a/libk3b/plugin/k3baudiodecoder.cpp
+++ b/libk3b/plugin/k3baudiodecoder.cpp
@@ -1,634 +1,641 @@
 /*
  *
  * Copyright (C) 2003-2009 Sebastian Trueg <trueg@k3b.org>
  *
  * This file is part of the K3b project.
  * Copyright (C) 1998-2009 Sebastian Trueg <trueg@k3b.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  * See the file "COPYING" for the exact licensing terms.
  */
 
 #include <config-libk3b.h>
 
 #include "k3bcore.h"
 #include "k3baudiodecoder.h"
 #include "k3bpluginmanager.h"
 #include "k3b_i18n.h"
 
 #include <KFileMetaData/ExtractionResult>
 #include <KFileMetaData/Extractor>
 #include <KFileMetaData/ExtractorCollection>
 #include <KFileMetaData/Properties>
 
 #include <QtCore/QDebug>
 #include <QtCore/QMap>
 #include <QtCore/QMimeDatabase>
 #include <QtCore/QMimeType>
 
 #include <math.h>
 
 #include <samplerate.h>
 
 #if !(HAVE_LRINT && HAVE_LRINTF)
 #define lrint(dbl)              ((int) (dbl+0.5))
 #define lrintf(flt)             ((int) (flt+0.5))
 #endif
 
 // use a one second buffer
 static const int DECODING_BUFFER_SIZE = 75*2352;
 
 namespace
 {
 
 typedef QMap<K3b::AudioDecoder::MetaDataField, QString> MetaInfoMap;
 
 class ExtractionResult : public KFileMetaData::ExtractionResult
 {
 public:
     ExtractionResult( const QString& filename, const QString& mimetype, MetaInfoMap& metaInfoMap )
         : KFileMetaData::ExtractionResult( filename, mimetype, KFileMetaData::ExtractionResult::ExtractMetaData ),
           metaInfoMap_( metaInfoMap ) {}
 
     void append(const QString& /*text*/) override {}
 
     void addType(KFileMetaData::Type::Type /*type*/) override {}
 
     void add(KFileMetaData::Property::Property property, const QVariant& value) override
     {
         switch(property)
         {
         case KFileMetaData::Property::Title:
             metaInfoMap_.insert( K3b::AudioDecoder::META_TITLE, value.toString() );
             break;
         case KFileMetaData::Property::Artist:
             metaInfoMap_.insert( K3b::AudioDecoder::META_ARTIST, value.toString() );
             break;
         case KFileMetaData::Property::Lyricist:
             metaInfoMap_.insert( K3b::AudioDecoder::META_SONGWRITER, value.toString() );
             break;
         case KFileMetaData::Property::Composer:
             metaInfoMap_.insert( K3b::AudioDecoder::META_COMPOSER, value.toString() );
             break;
         case KFileMetaData::Property::Comment:
             metaInfoMap_.insert( K3b::AudioDecoder::META_COMMENT, value.toString() );
             break;
         default:
             break;
         }
     }
 
 private:
     MetaInfoMap& metaInfoMap_;
 };
 
 } // namespace
 
 class K3b::AudioDecoder::Private
 {
 public:
     Private()
         : resampleState(0),
           resampleData(0),
           inBuffer(0),
           inBufferPos(0),
           inBufferFill(0),
           outBuffer(0),
           monoBuffer(0),
           decodingBufferPos(0),
           decodingBufferFill(0),
-          valid(true) {
+          valid(true),
+          metaDataCollection(NULL) {
     }
 
     // the current position of the decoder
     // This does NOT include the decodingBuffer
     K3b::Msf currentPos;
 
     // since the current position above is measured in frames
     // there might be a little offset since the decoded data is not
     // always a multiple of 2353 bytes
     int currentPosOffset;
 
     // already decoded bytes from last init or last seek
     // TODO: replace alreadyDecoded with currentPos
     unsigned long alreadyDecoded;
 
     K3b::Msf decodingStartPos;
 
-    KFileMetaData::ExtractorCollection metaDataCollection;
+    KFileMetaData::ExtractorCollection *metaDataCollection;
     QMimeDatabase mimeDatabase;
     QMimeType mimeType;
 
     // set to true once decodeInternal() returned 0
     bool decoderFinished;
 
     // resampling
     SRC_STATE* resampleState;
     SRC_DATA* resampleData;
 
     float* inBuffer;
     float* inBufferPos;
     int inBufferFill;
 
     float* outBuffer;
 
     int samplerate;
     int channels;
 
     // mono -> stereo conversion
     char* monoBuffer;
 
     char decodingBuffer[DECODING_BUFFER_SIZE];
     char* decodingBufferPos;
     int decodingBufferFill;
 
     QMap<QString, QString> technicalInfoMap;
     MetaInfoMap metaInfoMap;
 
     bool valid;
 };
 
 
 
 K3b::AudioDecoder::AudioDecoder( QObject* parent )
     : QObject( parent )
 {
     d = new Private();
 }
 
 
 K3b::AudioDecoder::~AudioDecoder()
 {
     cleanup();
 
     if( d->inBuffer ) delete [] d->inBuffer;
     if( d->outBuffer ) delete [] d->outBuffer;
     if( d->monoBuffer ) delete [] d->monoBuffer;
 
     delete d->resampleData;
     if( d->resampleState )
         src_delete( d->resampleState );
     delete d;
 }
 
 
 void K3b::AudioDecoder::setFilename( const QString& filename )
 {
     m_fileName = filename;
     d->mimeType = QMimeType();
 }
 
 
 bool K3b::AudioDecoder::isValid() const
 {
     return d->valid;
 }
 
 
 bool K3b::AudioDecoder::analyseFile()
 {
     d->technicalInfoMap.clear();
     d->metaInfoMap.clear();
     d->mimeType = QMimeType();
 
     cleanup();
 
     bool ret = analyseFileInternal( m_length, d->samplerate, d->channels );
     if( ret && ( d->channels == 1 || d->channels == 2 ) && m_length > 0 ) {
         d->valid = initDecoder();
         return d->valid;
     }
     else {
         d->valid = false;
         return false;
     }
 }
 
 
 bool K3b::AudioDecoder::initDecoder( const K3b::Msf& startOffset )
 {
     if( initDecoder() ) {
         if( startOffset > 0 )
             return seek( startOffset );
         else
             return true;
     }
     else
         return false;
 }
 
 
 bool K3b::AudioDecoder::initDecoder()
 {
     cleanup();
 
     if( d->resampleState )
         src_reset( d->resampleState );
 
     d->alreadyDecoded = 0;
     d->currentPos = 0;
     d->currentPosOffset = 0;
     d->decodingBufferFill = 0;
     d->decodingBufferPos = 0;
     d->decodingStartPos = 0;
     d->inBufferFill = 0;
 
     d->decoderFinished = false;
 
     return initDecoderInternal();
 }
 
 
 int K3b::AudioDecoder::decode( char* _data, int maxLen )
 {
     unsigned long lengthToDecode = (m_length - d->decodingStartPos).audioBytes();
 
     if( d->alreadyDecoded >= lengthToDecode )
         return 0;
 
     if( maxLen <= 0 )
         return 0;
 
     int read = 0;
 
     if( d->decodingBufferFill == 0 ) {
         //
         // now we decode into the decoding buffer
         // to ensure a minimum buffer size
         //
         d->decodingBufferFill = 0;
         d->decodingBufferPos = d->decodingBuffer;
 
         if( !d->decoderFinished ) {
             if( d->samplerate != 44100 ) {
 
                 // check if we have data left from some previous conversion
                 if( d->inBufferFill > 0 ) {
                     read = resample( d->decodingBuffer, DECODING_BUFFER_SIZE );
                 }
                 else {
                     if( !d->inBuffer ) {
                         d->inBuffer = new float[DECODING_BUFFER_SIZE/2];
                     }
 
                     if( (read = decodeInternal( d->decodingBuffer, DECODING_BUFFER_SIZE )) == 0 )
                         d->decoderFinished = true;
 
                     d->inBufferFill = read/2;
                     d->inBufferPos = d->inBuffer;
                     from16bitBeSignedToFloat( d->decodingBuffer, d->inBuffer, d->inBufferFill );
 
                     read = resample( d->decodingBuffer, DECODING_BUFFER_SIZE );
                 }
             }
             else if( d->channels == 1 ) {
                 if( !d->monoBuffer ) {
                     d->monoBuffer = new char[DECODING_BUFFER_SIZE/2];
                 }
 
                 // we simply duplicate every frame
                 if( (read = decodeInternal( d->monoBuffer, DECODING_BUFFER_SIZE/2 )) == 0 )
                     d->decoderFinished = true;
 
                 for( int i = 0; i < read; i+=2 ) {
                     d->decodingBuffer[2*i] = d->decodingBuffer[2*i+2] = d->monoBuffer[i];
                     d->decodingBuffer[2*i+1] = d->decodingBuffer[2*i+3] = d->monoBuffer[i+1];
                 }
 
                 read *= 2;
             }
             else {
                 if( (read = decodeInternal( d->decodingBuffer, DECODING_BUFFER_SIZE )) == 0 )
                     d->decoderFinished = true;
             }
         }
 
         if( read < 0 ) {
             return -1;
         }
         else if( read == 0 ) {
             // check if we need to pad
             int bytesToPad = lengthToDecode - d->alreadyDecoded;
             if( bytesToPad > 0 ) {
                 qDebug() << "(K3b::AudioDecoder) track length: " << lengthToDecode
                          << "; decoded module data: " << d->alreadyDecoded
                          << "; we need to pad " << bytesToPad << " bytes." << endl;
 
                 if( DECODING_BUFFER_SIZE < bytesToPad )
                     bytesToPad = DECODING_BUFFER_SIZE;
 
                 ::memset( d->decodingBuffer, 0, bytesToPad );
 
                 qDebug() << "(K3b::AudioDecoder) padded " << bytesToPad << " bytes.";
 
                 read = bytesToPad;
             }
             else {
                 qDebug() << "(K3b::AudioDecoder) decoded " << d->alreadyDecoded << " bytes.";
                 return 0;
             }
         }
         else {
 
             // check if we decoded too much
             if( d->alreadyDecoded + read > lengthToDecode ) {
                 qDebug() << "(K3b::AudioDecoder) we decoded too much. Cutting output by "
                          << (read + d->alreadyDecoded - lengthToDecode) << endl;
                 read = lengthToDecode - d->alreadyDecoded;
             }
         }
 
         d->decodingBufferFill = read;
     }
 
 
     // clear out the decoding buffer
     read = qMin( maxLen, d->decodingBufferFill );
     ::memcpy( _data, d->decodingBufferPos, read );
     d->decodingBufferPos += read;
     d->decodingBufferFill -= read;
 
     d->alreadyDecoded += read;
     d->currentPos += (read+d->currentPosOffset)/2352;
     d->currentPosOffset = (read+d->currentPosOffset)%2352;
 
     return read;
 }
 
 
 // resample data in d->inBufferPos and save the result to data
 //
 //
 int K3b::AudioDecoder::resample( char* data, int maxLen )
 {
     if( !d->resampleState ) {
         d->resampleState = src_new( SRC_SINC_MEDIUM_QUALITY, d->channels, 0 );
         if( !d->resampleState ) {
             qDebug() << "(K3b::AudioDecoder) unable to initialize resampler.";
             return -1;
         }
         d->resampleData = new SRC_DATA;
     }
 
     if( !d->outBuffer ) {
         d->outBuffer = new float[DECODING_BUFFER_SIZE/2];
     }
 
     d->resampleData->data_in = d->inBufferPos;
     d->resampleData->data_out = d->outBuffer;
     d->resampleData->input_frames = d->inBufferFill/d->channels;
     d->resampleData->output_frames = maxLen/2/2;  // in case of mono files we need the space anyway
     d->resampleData->src_ratio = 44100.0/(double)d->samplerate;
     if( d->inBufferFill == 0 )
         d->resampleData->end_of_input = 1;  // this should force libsamplerate to output the last frames
     else
         d->resampleData->end_of_input = 0;
 
     int len = 0;
     if( (len = src_process( d->resampleState, d->resampleData ) ) ) {
         qDebug() << "(K3b::AudioDecoder) error while resampling: " << src_strerror(len);
         return -1;
     }
 
     if( d->channels == 2 )
         fromFloatTo16BitBeSigned( d->outBuffer, data, d->resampleData->output_frames_gen*d->channels );
     else {
         for( int i = 0; i < d->resampleData->output_frames_gen; ++i ) {
             fromFloatTo16BitBeSigned( &d->outBuffer[i], &data[4*i], 1 );
             fromFloatTo16BitBeSigned( &d->outBuffer[i], &data[4*i+2], 1 );
         }
     }
 
     d->inBufferPos += d->resampleData->input_frames_used*d->channels;
     d->inBufferFill -= d->resampleData->input_frames_used*d->channels;
     if( d->inBufferFill <= 0 ) {
         d->inBufferPos = d->inBuffer;
         d->inBufferFill = 0;
     }
 
     // 16 bit frames, so we need to multiply by 2
     // and we always have two channels
     return d->resampleData->output_frames_gen*2*2;
 }
 
 
 void K3b::AudioDecoder::from16bitBeSignedToFloat( char* src, float* dest, int samples )
 {
     while( samples ) {
         samples--;
         dest[samples] = static_cast<float>( qint16(((src[2*samples]<<8)&0xff00)|(src[2*samples+1]&0x00ff)) / 32768.0 );
     }
 }
 
 
 void K3b::AudioDecoder::fromFloatTo16BitBeSigned( float* src, char* dest, int samples )
 {
     while( samples ) {
         samples--;
 
         float scaled = src[samples] * 32768.0;
         qint16 val = 0;
 
         // clipping
         if( scaled >= ( 1.0 * 0x7FFF ) )
             val = 32767;
         else if( scaled <= ( -8.0 * 0x1000 ) )
             val = -32768;
         else
             val = lrintf(scaled);
 
         dest[2*samples]   = val>>8;
         dest[2*samples+1] = val;
     }
 }
 
 
 void K3b::AudioDecoder::from8BitTo16BitBeSigned( char* src, char* dest, int samples )
 {
     while( samples ) {
         samples--;
 
         float scaled = static_cast<float>(quint8(src[samples])-128) / 128.0 * 32768.0;
         qint16 val = 0;
 
         // clipping
         if( scaled >= ( 1.0 * 0x7FFF ) )
             val = 32767;
         else if( scaled <= ( -8.0 * 0x1000 ) )
             val = -32768;
         else
             val = lrintf(scaled);
 
         dest[2*samples]   = val>>8;
         dest[2*samples+1] = val;
     }
 }
 
 
 bool K3b::AudioDecoder::seek( const K3b::Msf& pos )
 {
     qDebug() << "(K3b::AudioDecoder) seek from " << d->currentPos.toString() << " (+" << d->currentPosOffset
              << ") to " << pos.toString() << endl;
 
     if( pos > length() )
         return false;
 
     d->decoderFinished = false;
 
     if( pos == d->currentPos && d->currentPosOffset == 0 )
         return true;
 
     if( pos == 0 )
         return initDecoder();
 
     bool success = false;
 
     //
     // First check if we may do a "perfect seek".
     // We cannot rely on the decoding plugins to seek perfectly. Especially
     // the mp3 decoder does not. But in case we want to split a live recording
     // it is absolutely nesseccary to perform a perfect seek.
     // So if we did not already decode past the seek position and the difference
     // between the current position and the seek position is less than some fixed
     // value we simply decode up to the seek position.
     //
     if( ( pos > d->currentPos ||
           ( pos == d->currentPos && d->currentPosOffset == 0 ) )
         &&
         ( pos - d->currentPos < K3b::Msf(0,10,0) ) ) {  // < 10 seconds is ok
         qDebug() << "(K3b::AudioDecoder) performing perfect seek from " << d->currentPos.toString()
                  << " to " << pos.toString() << ". :)" << endl;
 
         qint64 bytesToDecode = pos.audioBytes() - d->currentPos.audioBytes() - d->currentPosOffset;
         qDebug() << "(K3b::AudioDecoder) seeking " << bytesToDecode << " bytes.";
         char buffi[10*2352];
         while( bytesToDecode > 0 ) {
             int read = decode( buffi, qMin(( qint64 )( 10*2352 ), bytesToDecode) );
             if( read <= 0 )
                 return false;
 
             bytesToDecode -= read;
         }
 
         qDebug() << "(K3b::AudioDecoder) perfect seek done.";
 
         success = true;
     }
     else {
         //
         // Here we have to reset the resampling stuff since we restart decoding at another position.
         //
         if( d->resampleState )
             src_reset( d->resampleState );
         d->inBufferFill = 0;
 
         //
         // And also reset the decoding buffer to not return any garbage from previous decoding.
         //
         d->decodingBufferFill = 0;
 
         success = seekInternal( pos );
     }
 
     d->alreadyDecoded = 0;
     d->currentPos = d->decodingStartPos = pos;
     d->currentPosOffset = 0;
 
     return success;
 }
 
 
 void K3b::AudioDecoder::cleanup()
 {
+    if (d->metaDataCollection) {
+        delete d->metaDataCollection;
+        d->metaDataCollection = NULL;
+    }
 }
 
 
 QString K3b::AudioDecoder::metaInfo( MetaDataField f )
 {
     if( d->metaInfoMap.contains( f ) )
         return d->metaInfoMap[f];
 
     // fall back to KFileMetaData
     if( !d->mimeType.isValid() )
     {
         d->mimeType = d->mimeDatabase.mimeTypeForFile( m_fileName );
-        for( KFileMetaData::Extractor* plugin : d->metaDataCollection.fetchExtractors( d->mimeType.name() ) )
+        if (!d->metaDataCollection)
+            d->metaDataCollection = new KFileMetaData::ExtractorCollection;
+        for( KFileMetaData::Extractor* plugin : d->metaDataCollection->fetchExtractors( d->mimeType.name() ) )
         {
             ExtractionResult extractionResult(m_fileName, d->mimeType.name(), d->metaInfoMap);
             plugin->extract(&extractionResult);
         }
 
         if( d->metaInfoMap.contains( f ) )
             return d->metaInfoMap[f];
     }
 
     return QString();
 }
 
 
 void K3b::AudioDecoder::addMetaInfo( MetaDataField f, const QString& value )
 {
     if( !value.isEmpty() )
         d->metaInfoMap[f] = value;
     else
         qDebug() << "(K3b::AudioDecoder) empty meta data field.";
 }
 
 
 QStringList K3b::AudioDecoder::supportedTechnicalInfos() const
 {
     QStringList l;
     for( QMap<QString, QString>::const_iterator it = d->technicalInfoMap.constBegin();
          it != d->technicalInfoMap.constEnd(); ++it )
         l.append( it.key() );
     return l;
 }
 
 
 QString K3b::AudioDecoder::technicalInfo( const QString& key ) const
 {
     return d->technicalInfoMap[key];
 }
 
 
 void K3b::AudioDecoder::addTechnicalInfo( const QString& key, const QString& value )
 {
     d->technicalInfoMap[key] = value;
 }
 
 
 K3b::AudioDecoder* K3b::AudioDecoderFactory::createDecoder( const QUrl& url )
 {
     qDebug() << "(K3b::AudioDecoderFactory::createDecoder( " << url.toLocalFile() << " )";
     QList<K3b::Plugin*> fl = k3bcore->pluginManager()->plugins( "AudioDecoder" );
 
     // first search for a single format decoder
     Q_FOREACH( K3b::Plugin* plugin, fl ) {
         K3b::AudioDecoderFactory* f = dynamic_cast<K3b::AudioDecoderFactory*>( plugin );
         if( f && !f->multiFormatDecoder() && f->canDecode( url ) ) {
             qDebug() << "1"; return f->createDecoder();}
     }
 
     // no single format decoder. Search for a multi format decoder
     Q_FOREACH( K3b::Plugin* plugin, fl ) {
         K3b::AudioDecoderFactory* f = dynamic_cast<K3b::AudioDecoderFactory*>( plugin );
         if( f && f->multiFormatDecoder() && f->canDecode( url ) ) {
             qDebug() << "2"; return f->createDecoder();}
     }
 
     qDebug() << "(K3b::AudioDecoderFactory::createDecoder( " << url.toLocalFile() << " ) no success";
 
     // nothing found
     return 0;
 }
 
 
 QString K3b::AudioDecoderFactory::categoryName() const
 {
     return i18nc( "plugin type", "Audio Decoder" );
 }
 
 
diff --git a/libk3b/projects/audiocd/k3baudiotrack.cpp b/libk3b/projects/audiocd/k3baudiotrack.cpp
index e16c6bbae..b484d0985 100644
--- a/libk3b/projects/audiocd/k3baudiotrack.cpp
+++ b/libk3b/projects/audiocd/k3baudiotrack.cpp
@@ -1,809 +1,809 @@
 /*
  *
  * Copyright (C) 2003-2008 Sebastian Trueg <trueg@k3b.org>
  * Copyright (C) 2009      Gustavo Pichorim Boiko <gustavo.boiko@kdemail.net>
  * Copyright (C) 2010      Michal Malek <michalm@jabster.pl>
  *
  * This file is part of the K3b project.
  * Copyright (C) 1998-2009 Sebastian Trueg <trueg@k3b.org>
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  * See the file "COPYING" for the exact licensing terms.
  */
 
 
 #include "k3baudiotrack.h"
 #include "k3baudiodoc.h"
 #include "k3baudiodatasource.h"
 #include "k3baudiotrackreader.h"
 
 #include "k3baudiodecoder.h"
 #include "k3bcore.h"
 #include "k3bcdtextvalidator.h"
 
 #include <QtCore/QDebug>
 #include <QtCore/QString>
 
 
 
 class K3b::AudioTrack::Private
 {
 public:
     Private( AudioDoc* p = 0 )
     :
       parent(p),
       copy(false),
       preEmp(false),
       index0Offset(150),
       prev(0),
       next(0),
       firstSource(0),
       currentlyDeleting(false) {
         cdTextValidator = new K3b::CdTextValidator();
     }
 
     ~Private() {
         delete cdTextValidator;
     }
 
     AudioDoc* parent;
 
     /** copy protection */
     bool copy;
     bool preEmp;
 
     Msf index0Offset;
 
     Device::TrackCdText cdText;
 
     // list
     AudioTrack* prev;
     AudioTrack* next;
 
     AudioDataSource* firstSource;
 
     bool currentlyDeleting;
 
     K3b::CdTextValidator* cdTextValidator;
 };
 
 
 K3b::AudioTrack::AudioTrack()
     : QObject(),
       d( new Private )
 {
 }
 
 
 K3b::AudioTrack::AudioTrack( K3b::AudioDoc* parent )
     : QObject(),
       d( new Private( parent ) )
 {
 }
 
 
 K3b::AudioTrack::~AudioTrack()
 {
     qDebug() << this;
 
     d->currentlyDeleting = true;
 
     // fix the list
     take();
 
     qDebug() << "deleting sources.";
 
     // delete all sources
     while( d->firstSource )
-        delete d->firstSource;
+        delete d->firstSource->take();
 
     qDebug() << "finished";
 
     delete d;
 }
 
 
 K3b::AudioDoc* K3b::AudioTrack::doc() const
 {
     return d->parent;
 }
 
 
 void K3b::AudioTrack::emitChanged()
 {
     emit changed();
 
     if( d->parent && !d->currentlyDeleting )
         d->parent->slotTrackChanged( this );
 }
 
 
 void K3b::AudioTrack::setArtist( const QString& a )
 {
     setPerformer( a );
 }
 
 
 void K3b::AudioTrack::setPerformer( const QString& a )
 {
     if( performer() != a ) {
         QString s( a );
         d->cdTextValidator->fixup( s );
         d->cdText.setPerformer(s);
         emitChanged();
     }
 }
 
 
 void K3b::AudioTrack::setTitle( const QString& t )
 {
     if( title() != t ) {
         QString s( t );
         d->cdTextValidator->fixup( s );
         d->cdText.setTitle(s);
         emitChanged();
     }
 }
 
 
 void K3b::AudioTrack::setArranger( const QString& t )
 {
     if( arranger() != t ) {
         QString s( t );
         d->cdTextValidator->fixup( s );
         d->cdText.setArranger(s);
         emitChanged();
     }
 }
 
 
 void K3b::AudioTrack::setSongwriter( const QString& t )
 {
     if( songwriter() != t ) {
         QString s( t );
         d->cdTextValidator->fixup( s );
         d->cdText.setSongwriter(s);
         emitChanged();
     }
 }
 
 
 void K3b::AudioTrack::setComposer( const QString& t )
 {
     if( composer() != t ) {
         QString s( t );
         d->cdTextValidator->fixup( s );
         d->cdText.setComposer(s);
         emitChanged();
     }
 }
 
 
 void K3b::AudioTrack::setIsrc( const QString& t )
 {
     if( isrc() != t ) {
         d->cdText.setIsrc(t);
         emitChanged();
     }
 }
 
 
 void K3b::AudioTrack::setCdTextMessage( const QString& t )
 {
     if( cdTextMessage() != t ) {
         QString s( t );
         d->cdTextValidator->fixup( s );
         d->cdText.setMessage(s);
         emitChanged();
     }
 }
 
 
 void K3b::AudioTrack::setCdText( const K3b::Device::TrackCdText& cdtext )
 {
     d->cdText = cdtext;
     emitChanged();
 }
 
 
 void K3b::AudioTrack::setPreEmp( bool b )
 {
     if( d->preEmp != b ) {
         d->preEmp = b;
         emitChanged();
     }
 }
 
 
 void K3b::AudioTrack::setCopyProtection( bool b )
 {
     if( d->copy != b ) {
         d->copy = b;
         emitChanged();
     }
 }
 
 
 K3b::AudioDataSource* K3b::AudioTrack::firstSource() const
 {
     return d->firstSource;
 }
 
 
 K3b::AudioDataSource* K3b::AudioTrack::lastSource() const
 {
     K3b::AudioDataSource* s = d->firstSource;
     while( s && s->next() )
         s = s->next();
     return s;
 }
 
 
 bool K3b::AudioTrack::inList() const
 {
     if( doc() )
         return ( doc()->firstTrack() == this || d->prev != 0 );
     else
         return false;
 }
 
 
 K3b::Msf K3b::AudioTrack::length() const
 {
     K3b::Msf length;
     K3b::AudioDataSource* source = d->firstSource;
     while( source ) {
         length += source->length();
         source = source->next();
     }
     return length;
 }
 
 
 KIO::filesize_t K3b::AudioTrack::size() const
 {
     return length().audioBytes();
 }
 
 QString K3b::AudioTrack::artist() const
 {
     return d->cdText.performer();
 }
 
 
 QString K3b::AudioTrack::performer() const
 {
     return d->cdText.performer();
 }
 
 
 QString K3b::AudioTrack::title() const
 {
     return d->cdText.title();
 }
 
 
 QString K3b::AudioTrack::arranger() const
 {
     return d->cdText.arranger();
 }
 
 
 QString K3b::AudioTrack::songwriter() const
 {
     return d->cdText.songwriter();
 }
 
 
 QString K3b::AudioTrack::composer() const
 {
     return d->cdText.composer();
 }
 
 
 QString K3b::AudioTrack::isrc() const
 {
     return d->cdText.isrc();
 }
 
 
 QString K3b::AudioTrack::cdTextMessage() const
 {
     return d->cdText.message();
 }
 
 
 K3b::Device::TrackCdText K3b::AudioTrack::cdText() const
 {
     return d->cdText;
 }
 
 
 bool K3b::AudioTrack::copyProtection() const
 {
     return d->copy;
 }
 
 
 bool K3b::AudioTrack::preEmp() const
 {
     return d->preEmp;
 }
 
 
 unsigned int K3b::AudioTrack::trackNumber() const
 {
     if( d->prev )
         return d->prev->trackNumber() + 1;
     else
         return 1;
 }
 
 
 K3b::Msf K3b::AudioTrack::index0() const
 {
     // we save the index0Offset as length of the resulting pregap
     // this way the length of the track does not need to be ready
     // when creating the track.
     return length() - d->index0Offset;
 }
 
 
 K3b::Msf K3b::AudioTrack::postGap() const
 {
     if( next() )
         return d->index0Offset;
     else
         return 0;
 }
 
 
 void K3b::AudioTrack::setIndex0( const K3b::Msf& msf )
 {
     if( msf == 0 )
         d->index0Offset = 0;
     else
         d->index0Offset = length() - msf;
 }
 
 
 K3b::AudioTrack* K3b::AudioTrack::take()
 {
     if( inList() ) {
         const int position = trackNumber() - 1;
         if ( doc() )
             emit doc()->trackAboutToBeRemoved( position );
 
         if( !d->prev )
             doc()->setFirstTrack( d->next );
         if( !d->next )
             doc()->setLastTrack( d->prev );
 
         if( d->prev )
             d->prev->d->next = d->next;
         if( d->next )
             d->next->d->prev = d->prev;
 
         d->prev = d->next = 0;
 
         // remove from doc
         if( doc() )
             doc()->slotTrackRemoved( position );
 
         d->parent = 0;
     }
 
     return this;
 }
 
 
 void K3b::AudioTrack::moveAfter( K3b::AudioTrack* track )
 {
     qDebug() << "(K3b::AudioTrack::moveAfter( " << track << " )";
     if( !track ) {
         if( !doc() ) {
             qDebug() << "(K3b::AudioTrack::moveAfter) no parent set";
             return;
         }
 
         // make sure we do not mess up the list
         if( doc()->lastTrack() )
             moveAfter( doc()->lastTrack() );
         else {
             emit doc()->trackAboutToBeAdded( 0 );
             doc()->setFirstTrack( take() );
             doc()->setLastTrack( this );
             emit doc()->trackAdded( 0 );
         }
     }
     else if( track == this ) {
         qDebug() << "(K3b::AudioTrack::moveAfter) trying to move this after this.";
         return;
     }
     else {
         // remove this from the list
         take();
 
         emit track->doc()->trackAboutToBeAdded( track->trackNumber()-1 );
 
         // set the new parent doc
         d->parent = track->doc();
 
         K3b::AudioTrack* oldNext = track->d->next;
 
         // set track as prev
         track->d->next = this;
         d->prev = track;
 
         // set oldNext as next
         if( oldNext )
             oldNext->d->prev = this;
         d->next = oldNext;
 
         if( !d->prev )
             doc()->setFirstTrack( this );
         if( !d->next )
             doc()->setLastTrack( this );
 
         emit doc()->trackAdded( track->trackNumber()-1 );
     }
 
     emitChanged();
 }
 
 
 void K3b::AudioTrack::moveAhead( K3b::AudioTrack* track )
 {
     if( !track ) {
         if( !doc() ) {
             qDebug() << "(K3b::AudioTrack::moveAfter) no parent set";
             return;
         }
 
         // make sure we do not mess up the list
         if( doc()->firstTrack() )
             moveAhead( doc()->firstTrack() );
         else {
             emit doc()->trackAboutToBeAdded( 0 );
             doc()->setFirstTrack( take() );
             doc()->setLastTrack( this );
             emit doc()->trackAdded( 0 );
         }
     }
     else if( track == this ) {
         qDebug() << "(K3b::AudioTrack::moveAhead) trying to move this ahead of this.";
         return;
     }
     else {
         // remove this from the list
         take();
 
         emit track->doc()->trackAboutToBeAdded( track->trackNumber()-1 );
 
         // set the new parent doc
         d->parent = track->doc();
 
         K3b::AudioTrack* oldPrev = track->d->prev;
 
         // set track as next
         d->next = track;
         track->d->prev = this;
 
         // set oldPrev as prev
         d->prev = oldPrev;
         if( oldPrev )
             oldPrev->d->next = this;
 
         if( !d->prev )
             doc()->setFirstTrack( this );
         if( !d->next )
             doc()->setLastTrack( this );
 
         emit doc()->trackAdded( track->trackNumber()-1 );
     }
 
     emitChanged();
 }
 
 
 void K3b::AudioTrack::merge( K3b::AudioTrack* trackToMerge, K3b::AudioDataSource* sourceAfter )
 {
     qDebug() << "(K3b::AudioTrack::merge) " << trackToMerge << " into " << this;
     if( this == trackToMerge ) {
         qDebug() << "(K3b::AudioTrack::merge) trying to merge this with this.";
         return;
     }
 
     // remove the track to merge to make sure it does not get deleted by the doc too early
     trackToMerge->take();
 
     // in case we prepend all of trackToMerge's sources
     if( !sourceAfter ) {
         qDebug() << "(K3b::AudioTrack::merge) merging " << trackToMerge->firstSource();
         if( d->firstSource ) {
             trackToMerge->firstSource()->moveAhead( d->firstSource );
         }
         else {
             addSource( trackToMerge->firstSource()->take() );
         }
         sourceAfter = d->firstSource;
     }
 
     qDebug() << "(K3b::AudioTrack::merge) now merge the other sources.";
     // now merge all sources into this track
     while( trackToMerge->firstSource() ) {
         K3b::AudioDataSource* s = trackToMerge->firstSource();
         qDebug() << "(K3b::AudioTrack::merge) merging source " << s << " from track " << s->track() << " into track "
                  << this << " after source " << sourceAfter << endl;
         s->moveAfter( sourceAfter );
         sourceAfter = s;
     }
 
     // TODO: should we also merge the indices?
 
     // now we can safely delete the track we merged
     delete trackToMerge;
 
     qDebug() << "(K3b::AudioTrack::merge) finished";
 
     emitChanged();
 }
 
 
 K3b::AudioTrack* K3b::AudioTrack::prev() const
 {
     return d->prev;
 }
 
 
 K3b::AudioTrack* K3b::AudioTrack::next() const
 {
     return d->next;
 }
 
 
 void K3b::AudioTrack::setFirstSource( K3b::AudioDataSource* source )
 {
     d->firstSource = source;
     while( source ) {
         source->m_track = this;
         source = source->next();
     }
 
     emitChanged();
 }
 
 
 void K3b::AudioTrack::addSource( K3b::AudioDataSource* source )
 {
     if( !source )
         return;
 
     K3b::AudioDataSource* s = d->firstSource;
     while( s && s->next() )
         s = s->next();
     if( s )
         source->moveAfter( s );
     else
         setFirstSource( source->take() );
 }
 
 
 void K3b::AudioTrack::sourceChanged( K3b::AudioDataSource* )
 {
     if( d->currentlyDeleting )
         return;
 
     // TODO: update indices
 
     if( d->index0Offset > length() )
         d->index0Offset = length()-1;
 
     emitChanged();
 }
 
 
 int K3b::AudioTrack::numberSources() const
 {
     K3b::AudioDataSource* source = d->firstSource;
     int i = 0;
     while( source ) {
         source = source->next();
         ++i;
     }
     return i;
 }
 
 
 K3b::AudioTrack* K3b::AudioTrack::copy() const
 {
     K3b::AudioTrack* track = new K3b::AudioTrack();
 
     track->d->copy = d->copy;
     track->d->preEmp = d->preEmp;
     track->d->index0Offset = d->index0Offset;
     track->d->cdText = d->cdText;
     K3b::AudioDataSource* source = d->firstSource;
     while( source ) {
         track->addSource( source->copy() );
         source = source->next();
     }
 
     return track;
 }
 
 
 K3b::AudioTrack* K3b::AudioTrack::split( const K3b::Msf& pos )
 {
     if( pos < length() ) {
         // search the source
         // pos will be the first sector of the new track
         K3b::Msf currentPos;
         K3b::AudioDataSource* source = firstSource();
         while( source && currentPos + source->length() <= pos ) {
             currentPos += source->length();
             source = source->next();
         }
 
         K3b::AudioDataSource* splitSource = 0;
         if( currentPos > 0 && currentPos == pos ) {
             // no need to split a source
             splitSource = source;
         }
         else {
             if (source) 
                 splitSource = source->split( pos - currentPos );
         }
 
         // the new track should include all sources from splitSource and below
         K3b::AudioTrack* splitTrack = new K3b::AudioTrack();
         splitTrack->d->cdText = d->cdText;
         source = splitSource;
         while( source ) {
             K3b::AudioDataSource* addSource = source;
             source = source->next();
             splitTrack->addSource( addSource );
         }
 
         qDebug() << "(K3b::AudioTrack) moving track " << splitTrack << " after this (" << this << ") with parent " << doc();
         splitTrack->moveAfter( this );
 
         return splitTrack;
     }
     else
         return 0;
 }
 
 
 QIODevice* K3b::AudioTrack::createReader( QObject* parent )
 {
     return new AudioTrackReader( *this, parent );
 }
 
 
 K3b::Device::Track K3b::AudioTrack::toCdTrack() const
 {
     if( !inList() )
         return K3b::Device::Track();
 
     K3b::Msf firstSector;
     K3b::AudioTrack* track = doc()->firstTrack();
     while( track != this ) {
         firstSector += track->length();
         track = track->next();
     }
 
     K3b::Device::Track cdTrack( firstSector,
                               firstSector + length() - 1,
                               K3b::Device::Track::TYPE_AUDIO );
 
     // FIXME: auch im audiotrack copy permitted
     cdTrack.setCopyPermitted( !copyProtection() );
     cdTrack.setPreEmphasis( preEmp() );
 
     // FIXME: add indices != 0
 
     // no index 0 for the last track. Or should we allow this???
     if( doc()->lastTrack() != this )
         cdTrack.setIndex0( index0() );
 
     // FIXME: convert to QCString
     //    cdTrack.setIsrc( isrc() );
 
     return cdTrack;
 }
 
 
 void K3b::AudioTrack::debug()
 {
     qDebug() << "Track " << this << endl
              << "  Prev: " << d->prev << endl
              << "  Next: " << d->next << endl
              << "  Sources:" << endl;
     K3b::AudioDataSource* s = d->firstSource;
     while( s ) {
         qDebug() << "  " << s << " - Prev: " << s->prev() << " Next: " << s->next();
         s = s->next();
     }
 }
 
 
 K3b::AudioDataSource* K3b::AudioTrack::getSource( int index ) const
 {
     int i = 0;
     K3b::AudioDataSource* source = firstSource();
     while ( source && i < index ) {
         source = source->next();
         ++i;
     }
     return source;
 }
 
 
 void K3b::AudioTrack::emitSourceAboutToBeRemoved( AudioDataSource* source )
 {
     emit sourceAboutToBeRemoved( source->sourceIndex() );
 
     if ( doc() ) {
         emit doc()->sourceAboutToBeRemoved( this, source->sourceIndex() );
     }
 }
 
 
 void K3b::AudioTrack::emitSourceRemoved( K3b::AudioDataSource* source )
 {
     if ( doc() ) {
         // set the first source by hand (without using setFirstSource() )
         // just to avoid the model to read invalid firstSources
         if ( !source->prev() )
             d->firstSource = source->next();
 
         emit doc()->sourceRemoved( this, source->sourceIndex() );
     }
 
     emit sourceRemoved( source->sourceIndex() );
 
     // and now call the setFirstSource() to make sure the proper signals
     // are emitted
     if ( !source->prev() )
         setFirstSource( source->next() );
 }
 
 
 void K3b::AudioTrack::emitSourceAboutToBeAdded( int position )
 {
     emit sourceAboutToBeAdded( position );
 
     if ( doc() ) {
         emit doc()->sourceAboutToBeAdded( this, position );
     }
 }
 
 
 void K3b::AudioTrack::emitSourceAdded( AudioDataSource* source )
 {
     if ( doc() ) {
         emit doc()->sourceAdded( this, source->sourceIndex() );
         doc()->slotTrackChanged( this );
     } else {
         emit sourceAdded( source->sourceIndex() );
     }
 }
 
 
 void K3b::AudioTrack::setIndex0Offset( const Msf& index0Offset )
 {
     d->index0Offset = index0Offset;
 }
 
 
 void K3b::AudioTrack::setParent( K3b::AudioDoc* parent )
 {
     d->parent = parent;
 }