Hi Alex.

Here is how I fixed this issue. I found this in the 757x forum.

Rename :-

767idle.wav = 767idle.wav.bak
x767cfm.wav = x767cfm.wav.bak
x767idle.wav = x767idle.wav.bak
x767idle2.wav = x767idle2.wav.bak

from :-

Flight Simulator X\SimObjects\Airplanes\CS_B767-300\sound.GE
Flight Simulator X\SimObjects\Airplanes\CS_B767-300\sound.PW
Flight Simulator X\SimObjects\Airplanes\CS_B767-300\sound.RR

That should cover all versions of the 767 (-300 -200 -Freighter)

If you don't see the .wav extension, don't worry. Just right click on each file name and select rename. Then just go to the end and type .bak
The file will be renamed 767idle.bak.wav etc and that will work too because the sound is looking for 767idle.wav etc

This doesn't seem to affect any other sounds when flying the 767.

If, however, Tim's method works, That's all good and fine.

Hope this helps.

Mark

EDIT. I zipped the files into a zip file and then deleted the files as I still have them saved in a zip file. Just in case