I like... One thing though... If your artists use samples from other licensed music, the RIAA will come after you personally.
* NOT LEGAL ADVICE * I see you have your domain info hidden using WhoisGuard. Good idea.
Better make sure that WhoisGuard won't give you up if they receive a demand letter from RIAA's lawyers. * NOT LEGAL ADVICE *
One last Q... If anyone can listen for free, how will you stop people from downloading what they listen to without paying?