The RSS feeds are up and working at CC Mixter and they are based on the new genre/tagging system. So, for example, if you wanted to watch for every upload of just loops with a Sampling Plus license it would look like this:

http://ccmixter.org/rss/loops+sampling_plus

Or if you want to watch the remix uploads of a certain person you can add their sign-on name:

http://ccmixter.org/rss/remix+mhite

The feed link itself point directly at the MP3. If you have any suggestions or wishlist items let me know as I’m collecting them now. (Someone has already suggested including a streaming link in the body of the item for the feed.)