Open Music Registry - This site has a database of audio files that are published using open content licenses. This allows users to download and freely user the files.

Downloads from the Open Music Registry are free, not just in price, but also in the way you can use them. You’re free to share the downloads with friends, include them in your work, and broadcast or stream it on the Internet.

The site suffers in comparison to others, because it doesn’t offer ratings, there’s no easy way to sample music, and it’s time-consuming to separate the wheat from the chaff. Nevertheless, the site is worth checking out. It has a lot of content, and the price and licensing is certainly right.