I did hear some crickets in a cave while playin last night. Didnt think anything of it (thought it might be a mod i am using). I think nevada skies sort of does this for thunder/rain and wind(?) anyway.
The crickets thing didnt bother me. I wonder if some outside night only sounds are leaking into the interiors or maybe weather too not sure. Are you using any mods zomb_killer?
Yeah... I have currently enabled 70+ mods, and I thought the mods were causin' this bug. I've disabled most of em and kept only DeadMoney.esm and HonestHearts.esm. Still the issue occur. I've replaced the exe with the old one (pre last patch) and the issue was gone...
And about the crickets don't bother me too, but in a casino to hear crickets is a bit strange. BTW, the ambients sound in Camp McCarran dosen't work either...only wind plays inside the airport.
I really don't know what the last patch broke in the game's audio system but the issue seems a bit serious to me...Hope Obsidian Entertainment/Bethesda Softworks will take in consideration this and fix it in the next patch...