in the P3D root folder Captain_Sim\777-II\Sound,  is there suppose to be a sound.cfg file in that folder?
The reason I ask is I installed a new payware aircraft that installed a sound add-on without any options and it seems it has deleted all of the Playing of cockpit sounds from any of my aircraft.  The .wav files are all there but no sound.cfg files can be locted except in the individual aircraft folders.