This problem has happened before, but all I had to do was close the game and re-launch. However, tonight I started up ARMA III (using my headphones which use the standard headphone jack) and I can not get sound. I have went as far as un-installing ARMA 3 and starting fresh (no luck). Also multiple computer reboots(no luck). Weird thing is that all other games on steam work great with my headset. Only ARMA 3 refuses have sound. Like I mentioned before, it use to be a quick fix. Now I have spent hours trying everything to fix it, but no luck