I did it as an experiment with the Doom Soundtrack and it turned out to be ok. I got a few questions as to how it was done. This is the text I came up with. This may or may not work for you.
Seems doing this will sometimes require alot of playing around to get it to work. but i will try to give you a quick run down.
this site has many 3do utils...
first you have to get the actual files from off the discs. You can use uncdrom. there was also a nice windows based utility linked on the boards @ http://cdinteractive.co.uk/3do/forum/viewtopic.php?t=80
then you need to figure out which files are the music files. usualy they are labeled or are in a music folder.
sometimes these files will have an exstension, sometimes they wont. You might have to rename them with an extension to get some of the converters to work. There are a couple converters on the site i linked. You just might have to trial and error to get one of them to work. the converters are...
zstream reader (not seeing this one the site right now)
I really have only got aifc2raw to be useful for me though. What i will do is rename the file extension to *.aifc if it is not already named that. (side note: if the file is already just an aiff or aif, try seeing if you can get it to play in sound forge first or something like that. It might not actually be compressed then) I will then run it through aifc2raw and it should output a raw file. The utility is command line based and will actually let you name the file whatever, but make it a *.raw.
I usualy take this file and load it into soundforge. When loading a raw, you have to manualy set the options for loading the file. Start with these settings...
sample rate 44,100
Before attempting to play the file, turn your speakers WAY DOWN. If it's wrong settings or the file didnt truly compress, the sound will be a ton of very load static. The audio representation will show this also by being a complete peaked sound wave. It could damage your speakers. IF it plays, you have to make sure it plays at the right speed or sounds right. If it plays at the wrong speed, it's usualy a sample rate issue. but you might have to play around with the options.
Once you get it right, you can save it as a WAV file and you can do whatever you want with it from there.
This will only work when the music is actually cd audio and not just using the 3do sound system. I think 3do could also have something that was midi like... but i really dont know that for sure. If that is the case, i wouldn't have any idea on ripping that music unless you do it the analog way.
Well i know this info is probably all jumbled up and maybe confusing, but i hope it helps you out a little bit. The process can be very time consuming. it can be hard to figure out where you went wrong because it could be a wrong soundforge setting or the file just didn't uncompress correctly. Lots of variables to play with. Good luck.