I am using premiere 6.5 and i am having trouble with me audio going out of sync. I am importing audio from another source to use and sync up with the footage i have shot. These are band videos and the clips are long, 7 minutes to 20 minutes. I am pulling the audio off the cd with soundforge and then importing it into premiere. I sync it up but then down the line when i check it in another spot its out of sync. What should i do???I have already editing all the footage and this is the final piece to do.