Metachat last.fm Group
From Wiki
last.fm is a web site that allows people to keep charts of the music they are listening to on their computers (using the Audioscrobbler plugin which is provided by that web site), share their charts with each other, and listen to auto-generated "radio stations" of each other's music. (The music stream is 128Kbps, so dial-up users can't use it.)
Metachat has its own group on last.fm. To join, make sure that you have a profile on last.fm and that you are logged in. Go to the Metachat group page, and click the "join this group" link. At this point, there are over 100 group members.