Hey, I'm hosting an online radio show called Godless American and I'd like to add some opening and closing music and some music bumpers to play before and after breaks on the show. I've tried mixing some stuff with garage band and I can honestly say that I'm musically illiterate.
As far as compensation, the only thing I can offer is free advertising on my blog and on the radio show.
Another thought, why don't you try contacting some of the atheist rappers - Greydon Square is a member of Nexus, so is PRoCLaiM. Contact AK47 (also on Nexus) as she has some great atheist musical contacts. Tell her I sent you.