I'm using the full version in P3D 3.1 and although I can see the closed caption text not all messages are audible. For example, vc requests clearance, atc responds, can see text, no sound. Then the vc reads back and that is audible. This pattern seems pretty consistent in that only the read back is heard. I can hear the controller talking to other planes and pilots responding. I've tried reinstalling pf3, different flight plans and different airports and consistently I can only hear the read back, not the initial request or atc at clearance, taxi request, departure etc.
Mark