This problem has been recurring. I'm running cs5 production premium on a 2010 model 21.5 inch imac. What happens is that all the audio in my project has suddenly been lowered in pitch and at the end of each clip it repeats about the last 15% percent of it. This is hugely frustrating as i keep replacing footage in after affects and as my video is music based, it is essential that all audio is in sinc with the cgi i add in.
Any help would be appreciated, thanks