I played the game extensively during my youth and am very glad it is finally available on GOG. However, is there a way to bring back the 8 bit music somehow?
I may sound nuts, but I miss the original 'artificial/computery'sound.

Do you remember which soundcard you used to have back then?
The sound of the music entirely depends on the used soundcard. The default soundcard used by the gog version is the Sound Blaster 16. I couldn't get any older cards to work. PC Speaker and Tandy both play no music.

Try this one out, maybe you can find something useful here:
https://drive.google.com/folderview?id=0B9vYqsX3zcBdWnVWV2hkT0JwU1k&usp=sharing