Go here for starters:
Don't do anything. Well, the first song, 2 Get 2 Heaven (I don't understand why he does those goofy shortcuts but whatever), from his most recent album Big Ol' Fiya plays. But you can go play it in the site too. The title track is fantastic. And, ha ha, he covers Drink A Little Poison, which came out before Grayson's version did!
Go to Music, you can listen to the songs, volume at the bottom, etc...
Mooney is awesome. Probably the best slide player in the world.