Hi, Thank you for the reply. I tried this...
1) Deleted the "x64" folder in mods and copy/pasted it back in there again so it was from fresh.
2) Started OpenIV and went through to the "WEAPONS_PLAYER" directory (in mods/x64/... etc) to copy/paste the first file "ptl_pistol.awc" from the mod.
3) Using OpenIV again, went through to the "RESIDENT" directory (in "mods/x64/..." etc).
4) Right clicked on weapons.awc and selected "Export to openFormats (.oac)" then placed them in a seperate folder on the desktop. This provided me with the weapons folder with all the sounds and a weapons.oac as it should.
5) I then copied the single .wav file from the mod that was different (0x0F4DFCD5.wav) which is the pistol sound and pasted it into the weapons folder (with all the sounds) that I exported from OpenIV originally.
6) The Using OpenIV I right clicked again inside the RESIDENT directory and selected Import openFormats and selected the weapons.oac that I exported from OpenIV just before.
7) The sound was definately imported in there because double clicking on the weapons.awc brings up the media player to hear the sounds and it was the new pistol sound in there, however, in game again, it had silenced all the guns.
EDIT: Also should have mentioned, watched the tutorial and that's what I tried the first time around, just importing the weapons.oac from the mod and not extracting the one from OpenIV first. So tried both ways now and both result in silenced weapons. No other sound mods at all in RESIDENT.
Sorry if I'm doing something stupidly wrong!