I'm loving the idea behind Listening Room - basically a web based chat room where you can also upload and stream music to all participants. I'm sure it's not the first place to do this but it's certainly one of the simplest and most efficient executions of the idea that I've encountered. The creator, Abe Fettig has an informative writeup on his site about the progression of the site.. it seems to make nice incremental improvements over time. I'll be hanging out in here today.. come in and share some music.

Heads up via Mondo Salvo.