It’s by no means a replacement of the optical track but for anybody that’s interested, I think I managed to sync ADigitalMan’s restored 5.1 surround audio track with this release by decreasing the tempo of it by 0.750 seconds then muxing it with a delay of 500 ms.
Sounds great! Put it up somewere to share!
I’ve updated my comment on the release’s page at Blutopia with a link to it, otherwise, just drop me a line.