Editdroid v1 has 3 audio tracks; matrixed dolby surround 70mm 6-track mix, dolby stereo surround mix and original mono mix. If you want to compare the audio mixes I think you want this disc.
Edit:
O.K. I looked up the sources they used for the audio tracks. 6-track > DC, stereo > 1989 LD (special widescreen) and mono > vhs recording.