Hi Mark, Under the cs757 main folder>variants>FedEx_N936_RR folder the description reads as follows:  [texture]
sim=cs757-F
model=RR
texture=Fedex_N936FD_RR
atc_id=N936FD
atc_airline=Fedex
atc_flight_number=
ui_manufacturer=Boeing
ui_createdby=Captain Sim
ui_type=Boeing 757-200 Freighter RR
ui_variation=Fedex N936FD
The description makes no mention of the sound as you mentioned, but of course this is only the description of the repaint, and not the config folder/file. Again can't find the config file you mention. Thanks