I updated to 0.148 but that was several days, maybe even a week before this started happening. Everything was fine until out of the blue, it started going silent. I had made no system updates, no Mame updates, nothing. I just started up GameEx as always and started playing. I'm not trying to blame GameEx, I just don't have any other logic to see how it's tied to my Mame. If I just run my MameUI.exe, all the sound is properly set to 0 db. I'm just looking for some help as I've exhausted all efforts, searches, and the 2+ hours Frequency(user on here) helped walk me through scenarios to try to eliminate causes.