I have a video all set up, and sometimes when I render it I get a 'pop' or 'click' sound right as the file starts. This happens with many different videos. Or I can just load a video, select it and render it. CLICK/Pop.
In Vegas there is NO SOUND at that point in the audio track. I can mute the audio entirely and it is STILL there.
If I mute the VIDEO track, the sound is usually reduced. I say usually because I can render the file several times, using EXACT same seetings and area selected to render, and get different results. It happens even if I render, then re-render with a different output name. The files will have differences at the beginning.
 When the sound appears - it never goes away simply by more renders.
I have tried this on two machines (both running WinXP - Home & Pro).
It's very frustrating. Please HELP!!!!!!!!

