With the upgrade to version 2.1.0.1, the radio background sounds are almost inaudible. No matter what % volume I set, I can barely hear the background chatter. I've checked the Config settings for Sounds, and everything is fine. I can faintly hear the chatter, but the volume cannot be raised. I've even set the % volume to 100%, and it is still not audible. The ATC Audio Files for Ground, Departure, ATC, Approach, etc., are all fine, but it is just the Radio Background Sound that is not working. Any advice?