Sound related p3d v4 CTD

[bekesdd]

While investigating possible random crashes due to AI traffic during sim sessions, found that if I rapidly cycle among AIs with A key and simultaneously with Q key quickly switch on and off the sound a few times I can cause p3d to crash quickly and repeatably, with both default and addon AI traffic. If I rapidly cycle with the sound turned on it takes a little longer, and with keeping sound off it does not crash. This seem to indicate there might be issue with the sound causing rare crashes.