(edit)
Sorry, I typoed the subject of this post... great source of royalty FREE music
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I was wondering to myself where I can get royalty free music without having to pay exorbitant prices for the rights. Then I remembered Creative Commons. Archive.org is a great source for Creative Commons stuff.
Check this search out. Just a quick little search for royalty free rock I did.
http://www.archive.org/search.php?query=rock%20mediatype%3Aaudio%20AND%20collection%3Aopensource_audio
Not all of it really fits the definition of rock, but it's open source, creative commons stuff. So you can use it to your heart's content
Also, back in my youth, I used to make sound effects for Amiga games I was making with AMOS. You wouldn't know any of those games because I kept them to myself and a few friends. Anyway, I'm thinking of using those old skills and making a nice free sound pack for the DB and related communities.
No matter where you are... everyone is always connected.