Free and Royalty-Free is a good, if rare, combination, especially for the starting and/or low budget crowd :)
This site (
Incompetech.com) have some decent to very good tunes that are indeed free of charge, as long as he gets credited.
Examples:
New Friendly
Long Road
Truth of the Legend (Be careful with this one, the soprano synth on it is a bit ... loud)
Then of course there is
ACIDPlanet, just look for the Podsafe tag. There are some very good content there.
I for one was pleasantly surprised by
I don't want to set the world on fire by Peach Stealing Monkeys.
I'm sure some of you have similar links to either free or low-cost royalty free content, and not just audio, so feel free to share.