These items would have a catalog of music which we would backfill with non-Withmore Celebrity bands and then continue to be actively updated with new music generated by PC musicians . The backfilled stuff would be the "Classics" and the new stuff would be...well...new.
The Jukebox item itself would have a few functions...
Play: Plays Music, duh.
Stop: Stops Music -dead-.
Pause: Pauses Music.
Volume: HIGH (Gratuitous amount of verbose emotes and you would hear pounding bass along with lyrics a room away.) Medium (Occasional verbose emotes you would only hear in-room.) Low (Occasional room-filler with only the title chorus of the song so you're not bombarbed with automated music).
There would be a jukebox version that fits in Cars, Aeros, and Motorcycles. This would be easily stolen and resold. Deal with it.