mr spot... umm well since its a demo it may not work on your system, its rather sad...but it wuld help if you stated what kind of system you have ... and what OS you have.
P96 has a few probs with diffrent cgx stuff but the most annoying thing is the 15bit modes that bvision and such use, as there is no such modes for vodoo and all the new'r gfx cards...
for the sound issues, well try to read the docs at times as many of em require SPECIAL modes only, also dont use v5 of ahi..use V4.. doesnt mean diddly squat if you have a ppc or not as there is no AHI ppc for classic, atleast not how its supposed to be..
also it would help to take 1 by 1 demo/product to make it clear what kinda problems you have.
oh and yeah... alot of the new'r ppc products uses ENV alot, so you should be pretty sure that there is no files in there which may do some weird things..ie duplicate files...and u press save and it doesnt save etc (known VA prob)
oh and yes, check how much MEMORY you have free on your RTG card, as most products needs ATLEAST 6 megs to run properly, some needs 8 to work at all, and there is a few which needs 12+ megs .
hope this helps...and next time u ppost.... tell us abit more about everything as i cant help in anyway with what you have said allready....lol

cheers