I'm still looking, but I don't see any mention of how/if your music is encrpyted on thier servers, and how much they will cooperate/sell your information to the music companies.

This could be a goldmine for the record companies if the music is stored unencrypted and Amazon provides/sells them access. Both in finding pirated music, and also in market research.

"You give us the right to access, retain, use and disclose your account information and Your Files: to provide you with technical support and address technical issues; to investigate compliance with the terms of this Agreement, enforce the terms of this Agreement and protect the Service and its users from fraud or security threats; or as we determine is necessary to provide the Service or comply with applicable law. "

That language doesn't seem limiting enough to me. Investigate compliance could give 100% access to the record companies.

A law to make me provide the password? --- "You know, I really would like to help you unlock those files, but I've completely forgotten the password. I'm pretty sure it was a full sentence from a book I read once, but I don't even remember the books name now."