This was announced sometime last week: http://www.ohmstudio.com/ (watch the video!) Basically, it's a DAW where many people can work on the same song at once, and everything is synced/backed up/versioned through the Internet. It also has built-in chat and what appears to be some kind of community/social network (gah, I hate that word) that you can use to find people to collaborate with. There's a ton of questions about the system I'd like to see answered (how is copyright handled, what is the pricing model, are private servers supported, etc.), but from their video it looks extremely promising. Plus it'd allow people with obscure tastes like me to find like-minded, obscure-tasted musicians to make obscure music with (nobody around here wants to do metal arrangements of vintage video game tunes ). If it delivers and is reasonably-priced, I'm gonna have to get myself a Windows PC or a Mac. What do you guys think?