There is an organization that is called "Lawyers for the Arts" that provides assistance to artists free of charge--there are also any number of attorneys who specialize in music law--But first, I would contact first the attorneys who acted against MP3.COM, asking for information on the judgements that they got and how they might impact you--also, If my memory serves me, there is a some sort of arrangement that gives you as an MP3.COM posting artist membership priviliges in ASCAP(or the right to join for a special fee, or something along those lines)--since ASCAP was one of the plaintiffs in the action against MP3, you may be able to have them act on your behalf--