How it works and features should be more visible parts of the homepage. You haven't sold me at all but you're showing me a signup form. Give me the info first.
Eliminate all but the most important 3 or 4 bullet points. Controlling distribution sounds pretty similar to keeping the rights, simplify your fans' access to music is assumed from your mention of social networking sites, and most won't care about school music programs. Bullet points are like bumper stickers. Too many and they lose their effect.
Your headline being outside the main container looks strange.
More whitespace (blackspace?).
That user agreement textarea doesn't need to be more than three rows.
Increase line-height on the /About page.
The underlying point is that it doesn't look established enough for me to trust you with my music. I know it's beta, but consider allocating resources to design (including the "how it works" and service comparison graphics).