ezolt,
a screen shot would be worth 1000 words as the saying goes. One thing to check for is that IF you have installed the Misty sounds look in the Misty's Place\scenery folder and be sure that the files:
PF20_ADEX_KG.BGL
PF20_ADEX_KG_CVX.BGL
are in the folder. When I installed the sounds some how these two files were deleted. Probably due to ham handedness or more likely my second brain fart for Feb.
If the files have gone missing just get them from the Misty's Place download and replace them in the folder in you FSX\Addon Scenery\Misty's Place\scenery folder.