Holy cow, this was a bit tricky. Earlier tonight, I had found some "Space Quest" disk images from an old Apple IIgs. I wanted to check them out in ScummVM.
First, I had to find a way to extract the data from these A2R images, then rename and collect all of the necessary files. Took me quite a while to get the in-game music playing, but in the end ... everything worked! The game's soundtrack on the IIgs is glorious! It's even better than what's possible on the Amiga!
These are the disk images I'd found:
https://archive.org/details/wozaday_Space_Quest_IIgs