Thought I'd share a beta we have in Tangler called Infusician:

Discuss user experiences on Infusician.com. Infusician is a new social networking website for music collaboration and promotion. Briefly, users can: - Submit original music works for others to build upon - Create mash-ups of other musicians' works - Jam live online - Merge your original audio score with video footage

Check out Infusician and then let them know what you think in the Feedback Group

Thanks for spreading the word about Infusician, dekrazee1!

Pleasure!