Hey guys,

So I just bought the aircraft and had this issue as well.

I contacted AT, who makes AMAZING sounds for the 757/767, for FREE. Check him out: type "cs767 sound" on youtube, download link in the video description.

He replied in no time and recommended me to do the following, which worked:

1) Make sure your cockpit and environment default volumes are set to high. (I had to reduce mine for Immersive Audio for the another company)

2) - Go to E:\SimObjects\Airplanes\CS_B767-300ER-II_PW4060\sound
- Open the sound.cfg
- CTRL+F Search for "rolling" or scroll down to GROUND_ROLL
- Apply this:

[GROUND_ROLL]
filename=TSS-Rolling
flags=0
viewpoint=1
minimum_speed=20.00
maximum_speed=100.00                  
minimum_volume=4566
maximum_volume=10000
minimum_rate=0.69
maximum_rate=1.39



AT recommended me 120 for Maximum_speed, but went for the 100 in order for it to be louder.

Hope this helps!

Chris