hi, I had the same problem, but i got rayman's music to work!!
in my case in using cd rom but its not really metter.
follow my steps:
1. mount your .iso file.
2. create a foulder called "oldgames" in your hard drive (c:\)
3. open DOSBOX and type:
mount c c:\oldgames
4. type: mount d z:\ -t cdrom -ioctl_dx
when the Z is the letter of your mounted iso file. and just so you know that the _DX adds your audio works/
5. type: D:\
6. type: install
7. your install should open, change your soundcart to soundblaster or soundblaster 16 and install the game.
8. now when you play the music should work!!!
sorry for my english if there is any mistakes...good luck!
notify me if it worked