I loved Xenon II, but the PC music was terrible. I solved that by recording the music from a friend's Amiga, looped on two sides of a cassette tape, so I could listen to it while playing the game. It was the only game I ever bothered doing that with, but I did have a few other cassettes full of music recorded from Amiga and C64 that I listened to a lot (in the years before I had a PC with good enough sound card to listen to MOD or SID files).