AI Aircraft Sounds Missing (any help please)

I installed FSLive and initially was able to hear all the taxi and takeoff sounds from the AI traffic surrounding me. It was amazing to hear the jets as they started their takeoff. Suddenly the AI sounds have disappeared. I did not install anything new to flight simulator..I tried reinstalling FSLive and still am unable to hear any noises from my AI aircraft. Where do i look to solve this problem or what can i do to solve this problem. Who knows about how the fs2004 loads AI aircraft sounds...Any help pleaseI am running ActiveSky 5Level-d 767 (i have tried other aircraft same problem)FsLive