I have tried exporting my movie with different settings, h.264, quicktime, avi and everytime my audio is distorted. I checked the audio channel and there are no effects on it and the original footage and preview plays fine.
It's only after I export it that the voice gets lower and lower as the clip plays and eventually dissapears. It's quite creepy sounding actually. Any help would be much appreciated.
I'm with Todd; we need to know a lot more before we can make any useful guesses. Don't forget to check the audio hardware settings in your preferences too and perhaps report those back as well (screenshot might be useful). Are you saying the RAM preview sounds fine the whole way through? How long is the clip. Are you using MP3's in your comp?