Hm. The best copy I have at hand of the 1993 mix is the GOUT AC3. I could try to do this hack that way...or if perhaps someone'd be willing to relay me the audio track from the TR47 DVD or something as a FLAC? (Though for some reason, the ROW47 I had lying around here somewhere has the 3PO line, so it's not the 1993 mix.) Though, my ability to generate 5.1 is limited and maybe it would be better for someone else to do that step.