You've been asking for it!
The complete song is available on the Wilderness Trekking I page (linked from the Wilderness Trekking School Page at BackpackingLight.com > Wilderness Trekking School), in the WT1 video.
Also, Chris Cunningham will play the song LIVE to open the Skurka Event in Bozeman tonight.
We will be making this available on our iTunes feed to launch a new, higher quality podcast feed later this spring!
Otherwise, you'll have to be savvy and extract the audio from the WT1 video. Bootleggers, go for it!