Turntable.fm lets you listen to music at the same time with your friends. Turntable.fm is a project of Seth Goldstein and Billy Chasen, the two guys who brought us Stickybits. Everyone in a room has an avatar and can chat with each other. You can create your own playlist and get up on the DJ table to battle it out. The great thing about Turntable.fm is it allows you to hear what other people like and to collaborate. Of course, marking a song as lame is always an option if you are not a fan of someone else’s tastes.
The integration of Turntable.fm with iTunes, Last.fm and Spotify is also great because it provides some sort of monetization model. Apparently Sir Mix A Lot (of Baby Got Back fame) is a fan as he had his own room a couple of days ago.