Mikkula wrote:
It's "hl1/fvox/boop.wav". No idea how you could change it though
Create a wav file in its place. Garrysmod refers to source engine .gcf files for this sound. If there is a sound with this directory name in your garrysmod folder, it will use that instead.
So- what I'm going to do is create a directory with the path /hl1/fvox/ in my sounds folder. Next I will put a sound of my choice in this folder and rename it boop.wav to replace it.