Without threatening your copyright? I think this kind of license means you are putting your original work into the public domain - in other words giving it away, so it means you're giving the copyright away. You can get your music out and about in a lot of ways that aren't dots in a book on a shelf, you know. This is about people not having to pay royalties to use it, so you'll never earn zilch.

Anyway, that's how I understand Creative Commons - anyone know for sure?