Good and bad news, Dirkies. Your sound works for the Demo discs but as for disk 5 the sound needs to be shorten a little bit and after a while playing the Theme hangs in a loop.
Could yo tell me please the correct sound import settings?
I tried it with Goldwave
Raw (snd, raw)
PCM signed 8 bit, sereo
Rate (Hz): 11025
Playbackspeed in Goldwave 0.48