I've installed the new patch Ver1.1In the cockpit, I can hardly hear the ATC. I tried adjusting FS9 sound levels under settings but it doesn't appear to work. How can the sound be adjusted so that I can hear ATC or is this the way it is supposed to be?

The patch could not have changed your ATC volume as it does not access any internal FS settings. Try adjusting the Air Traffic Control slider to a higher position while lowering the ones for Engines and Environment.