This is a CFS3 mod package that was originally posted on the Netwings site. They were intended for stock CFS3 and/or CFS3 with Firepower ONLY. Nothing has been modified in any way and it is still in it's original *.zip file. Here is the README for full acknowledgement:
u-softer-overstress-sound
46TH DESIGN TEAM
softer overstress sound
Uploaded by Mixxa II on behalf of Sean Doran
u-softer-overstress-sound
46TH DESIGN TEAM
softer overstress sound
Uploaded by Mixxa II on behalf of Sean Doran
