VoxATC 6 and Aerosoft AES - sound cutoff

I noticed that when I started using VoxATC (v6) that the sound from AES is being cutoff. Is there anything I can do about it? Is this because VoxATC and AES both use the headphones as a communicating device or something else?All I hear is (during pushback for instance): "Please release...." (it should be please release parking brakes)"Left is clear...." (it should be "left is clear, right is clear, Okay to start engines")It does this for all sounds.The files themselves are okay when I play them in Media Player, but the combination of both VoxATC and AES produces this (unwanted) result.Any tips? (I'll post this on Aerosoft's forum too)FSX Gold Edition (with SP's and Acc pack)WIN7 x64PMDG 737NGZ (-800)AES 2.20i7/920 6GB RAM