OK, maybe this isn't the best place for troubleshooting, but I don't know where else to turn. One of the missions I downloaded I think ran a strange script that involved turning the sounds for 'effects' off, doing something, then turning it back on. It worked fine for awhile but at some point the effects sound went off pernamently. Radio and music work fine. Custom sounds for addon weapons work fine. But default environment sounds are gone.
If there's a script thingy I can run that might turn it on again or something please tell. I have a feeling that might be it, maybe not. I suppose if nothing works or turns up I'll just reinstall.