I uploaded those scans of the DAT.
I was at art college in Dundee from 1993 to 1997 and Andy Soosay was in my year.
He did Graphic Design, as far as I can remember, I did sculpture. He ended up working for Rockstar Games I think.
After MHTRTC came out, a mutual friend got the DAT off him and we tried to get a rip but didn't know anyone with a DAT player. Plus, we were too skint to hire one, FFS.
On the upside, I did get second (?) generation copies of BOC Maxima and A Few Old Tunes (1991 - 1995) right off the bat, so that was pretty darn sweet. And no, I didn't leak them...neither did my pal. We were good boys.
So, yeah, a crying shame about the non-rip of Alphaquest.
Another wee tit-bit of info...I ended up working at Dundee Contemporary Arts after college, and met a chap called Simon Yuill in 1999, who was doing some computer related art-ish projects there. He was also a member of Hexagon Sun...I tried to tap him about the early releases but all he would do is smile a knowing smile and proffer no other information. What a git.