Sound problem in 2K2pro

[TomCatATL]

 I DL'd a great sound file for an EC 135 heli.  When I play the individual .wav's in Media Player, the sound is fantastic.  When I fly the heli in FS2K2pro, the sounds pure stink.  I have a Sound Blaster card and have the FS sound quality turned all the way up.  Adjusting the sound quality doesn't change a thing.  What could be wrong?  Why is the sound degrading when it goes thru FS and sounds great thru Media Player?  Help!!!