>Nice site! It seem more focused on publishing and discussing mixed songs rather than providing a >platform for collaborators to exchange separate tracks inside a multi track recording project? Well, you are partly right. We don't support projects and we have no way of setting up a working group or anything like that. But SoundCloud is really ideal for sharing not only complete tracks but also samples and work in progress. People you trust can then comment on the piece and give feedback. So it can be used for collaborating and some producers already do actually. We are also thinking about collaborative aspects continuously and will try to enhance those features in the future. Hope that you still find the service useful. Cheers Henrik