This works around a bug or strange behavior in QtQuick Controls Slider where when reducing the maximumValue, the value is clamped to it (ie. reduced to it) but when increasing it again, it gets its old value back up until maximumValue.

slider.maximumValue = 1000
slider.value = 1000 // value is now 1000
slider.maximumValue = 0 // value is now 0
slider.maximumValue = 500 // value is now 500!
slider.maximumValue = 1500 // value is now 1000

I started one song song, seeked all the way to the end, it stopped. I started again.
Previously it would immediately seek to the end of the track. Now it would just carry on as normal.

If you drag the slider all the way to the end and just keep it there and wiggle the mouse around you can still cause havoc but that's nothing that'll happen during normal use :P