I am soon finishing with my 40-minutes long horror-movie, but at the end i discovered some problems.

While premiere was finished rendering, i played, and suddenly the sound dissapears for two or more seconds, and then back on next clip, and then suddenly off once more.
So why does the sound go off and on regulary this way? The only way to solve this so far, is to add the sound clip again, but there will be a lot work to get it finish. There are more than 500 sound clips to adjus, clip and paste!!!!


Please help!