I've got an idea that would may a great pub night out for any enterprising person out there, although I'm not sure of the legaility of it. There is also a feature request.

The idea is get a spot as a DJ at a pub. The gimic is that instead of supplying the music the punters provide it via their MP3 mobiles or ipods. You just plug the ipod into the PC and download the song and it gets put into the playlist.

This can be done via MP3 mobiles via bluetooth. Bluetooth support can be built in.

Not sure if this workable legaly or if people would want to technically supply music to someone else for free but maybe this  could be something that could be solved maybe automatically deleted after played.