Does anyone know where I can find Jason Mraz's *acoustic* version of "Summer Breeze"?

I've heard the acoustic version on youtube, but I can't find it to buy it. I use the music program Rhapsody, and all I find is the studio version from the "Everwood" soundtrack. The version I want is not this one, but an acoustic one, with more of a live sound to it. None of my internet searches have helped. Anyone have some insights? Thanks! :o)