I found that in some cases certain sounds in Arma3 are silent (like gunshots or helicopter sounds are silent/missing), if my sampling rate is higher than 48kHz (tried 88.2kHz and 96kHz). For example the gun & helicopter sounds are missing in the new Prarie Fire DLC, but if I switch to 48kHz sample rate all the sounds are working again. I have a USB external soundcard, but I wonder if problem lies in the Arma sound assets or engine? thank you, great game!