Soundcloud is an online file upload/download site for music, mixed with some social networking facility. It’s designed to help people who work with music (say, musicians or record labels) with a way to easily drop their music somewhere that collaborators and other professionally interested parties can get their hands on it and do whatever comes next.

Worth the sign-up? Any compelling features? What makes this different from other large file transfer services? Go try it out – then let us know. As usual – let’s have the review in the comments, please.