It seems that Android uses the Luv icon set and desktop uses the system icon set. I'm using the breeze theme so there are no icons for 'Tracks' or 'Albums', however using only the Luv theme (which this diff implements) leaves out key icons like for 'Collections' or 'Youtube'. Screenshots are provided below:

I feel that vvave should either try using the system's icons and fall back to an internal icon set or never use the system's icons (for consistency). Either way code to formalize all the icons will probably have to be written and an icon set that covers all use cases will have to be picked. Vvave already uses 'Material Design Icons' so that seems like a natural pack to choose.

Which option do you think is best @camiloh ? Lmk & I'll update this diff.