DarkRp Sound issues

Hey guys, I’m not sure why but for whatever reason any zombie sounds (i.e. yabba my icing)
are not working on my server. Any zombie NPC is silent and the headcrab pill I use doesn’t have sound either (post-apoc rp, obviously not real life rp). Can anyone help me out?

I have a feeling it has to do with moving certain sound files into the gamemode’s sound folder, but of course I’m not sure.

If you know how to open console, there should be an error like: couldn’t load sound file “____________.wav”