Specifically because KayRay asked, but also because I can't believe you all haven't heard of this site.
This is a site providing you with free, legal MP3s of a podcast (internet broadcast) show 'covering' all musical things "cover."
For instance, Episode 137 that I am listening to right now is playing Dolly Parton covering "Stairway." Yes, *that* "Stairway."
Wow. Anyhoo - enjoy!