This is what I did to get the guns sound working . There still not working right but the sound is not staying on.

Go into your \Program Files\Microsoft Games\Microsoft Flight Simulator X\Captain_Sim\weapon\loader\cfg

Backup your  unit data file. then open it up with notepad.

find this line ----- <Sound name="..\..\..\Captain_Sim\Weapon\Sound\VulcanCannon.wav" loopBeg="0.5139" loopEnd="1.3059" finishLoop="0" gain="1.0" />
           



and change it to this.

           <Sound name="..\..\..\Captain_Sim\Weapon\Sound\VulcanCannon.wav" loopBeg="0.5139" loopEnd="0.000" finishLoop="0" gain="1.0" />

Or just change the loopEnd="1.3059" to loopEnd="0.000" .

Do this to all your guns AND JUST YOUR GUNS. lol

This will Stop  the guns sound from staying on.

I had to take  this also out of the sound folder or it will stay on some time csweapon_mg_bullet_land1. wav

I hope this helps. It worked on my PC.

flyer01

CS- Please look at this and see if you can make it better.