alt Hacker NewsA couple of times I've tried somewhat seriously to build "google docs for ableton" (meaning two people editing the same project on different computers, seeing each other's edits in realtime). Frustratingly I decided it was impossible to do a really good job of it back then. This sounds like it might finally make it doable!
Don't kick yourself. It's not possible with Google Docs either. All these collaborative document editors have been mostly gimmicks/wastes of time.