So is the audio track something that you're looking to release in the near future, TheThirdGathers (or perhaps your friend)? Those of us who have already created our own versions of Backstroke of the West would love to add this audio track to our existing DVDs.
I actually screened Backstroke at a local sci-fi convention last April using the DVD I created and posted about in marioxb's thread. To my amazement, the theater I was showing it in was packed and we had to turn some people away because we were full. I'm looking to show it again this year and this dubbed version would be perfect!