I would love to see... er, hear an in game jukebox that plays the UO classic of the player's choosing. I feel that tinkers should produce this modern marvel of Sosarian technology. If you feel inclined, mayhaps combine it with tinker golems so that we may have a robot rock dj to entertain guests at parties.
If this would work only for yourself, then id love to have it implemented. There would be easier ways though, like a menu of available songs for example. If you want it to be hearable by everybody then you will run into some strange questions like: What will happen, if you activate numerous jukeboxes at the same time? etc...
You can find all the music in the UO folder, make a playlist hit shuffle and play it in your winamp or whatnot. Mute the ingame music. Bam jukebox...
... or be the player crafted item that there is already code for. Ya guys have seen my vids, right? I know how sound works