I think it was just from a sampler from a show maybe. I had it but deleted it, I downloaded it off YouTube years ago.
It's not from a "soundtrack" per-say, as there wasn't a "soundtrack" released. It was including in the "score" (thus, appearing in the actual movie... in this case, during the credits from what I recall). I believe that, uh... Artist Direct... put up a stream and/or download of it years back, but it was just a rip from the credits and not the full track. We're missing a third verse from Kaliko I do believe. It was done by David Sanders, by the way.
EDIT: Yep, Artist Direct had the stream... http://www.artistdirect.com/nad/window/media/page/listen/0,,5007027...