If you're still hearing ATC coms to you then there's nothing wrong with your audio setup.
I've been wondering if radio frequencies have anything to do with this issue, because you will only hear AI chatter if they are on the same frequency. If for some reason you get no chatter PF3 will broaden the frequency bandwidth to obtain more chatter, which is what it's been attempting to do according to your logs. I might have to add some additional debug code to ascertain exactly what's going amiss with your setup... let me give it some more thought and get back to you.