"That isn't it. It isn't a hardware/software-for-hardware problem. Why? Because if I play, say, snark_pit for example, and I shoot a crossbow, I hear the firing and explosion. Then, I load a custom map, fire a crossbow. Silent. Go back to snark_pit. Fire a crossbow. Silent. And it stays silent until I restart HL."
Now, it's not a custom sound question. ANY usermap. If anyone doesn't understand what I am asking(NOT why this is happening), please don't post.