Sound problems

Hi everyone!I posted the same message in the general discussion forum aswell, not sure where it belongs.Anyway, here is my problem:It seems FS2002 can't play any 4 bit audio files (wave files)!No ATC is played and the aircraft, which have 4 bit sounds, have no engine sounds! This applies for the default 737 and the Lear 45.Strange thing is, is that I have a second copy of windows on my harddisk and there all sounds are played (from the same FS2002 installation!). I tried reinstalling FS2002 but that didn't help either. Then I tried reinstalling my sound drivers, which also didn't help. I reinstalled directx9.0 and as that didn't help either, I installed a different sound card. Still no luck.Strangely enough, I can play the 4bit sound files under windows and there they sound just fine!I converted a couple of wave files into 16 bit and then FS2002 played them! Unfortunately, I believe ATC doesn't use fixed wave files so converting it is impossible.I wonder what causes this problem? As if I would be missing a wave codec...Would greatly appreciate it if any of you guys have some tips on how to fix this annoying problem!Thanks,Mark