Well as some of you know I downloaded something and it had tons of malware.
I think in the process of me trying to fix things I removed something that had to do with my sound in games.
Just to make sure it wasn't just for GunZ, I logged on Osu!, and Minecraft. The sound on Osu! doesn't work, but Minecraft's does.
I have tried:
  • Reinstalling GunZ
  • Restarting my computer
  • Checking the Hardware mixer to see if it was turned down