Onlinerock.com
At OnlineRock, music enthusiasts can easily create their own Web site, post messages on the site's bulletin board, chat interactively with others, and learn about new online and offline music technology. All of the site's services are free, and OnlineRock gives its members 10 megs of Web space (more upon special request). Better yet, unlike other online communities, OnlineRock's member sites include no annoying pop-up ads. The company is planning to offer free Web-based email to members sometime during the next few month.

XING MP3 Music Software