Hello,
I am having the same problem of audio drift/ out of sync on files in FCP7. They play in sync with QT, MPEG, and VLC. I have tried the above mentioned fixes and converting the file into pro res, even though it is already a pro res file, does fix the problem. I was hoping someone has found another easier fix because I am working on shows that run anywhere from 30mins to 4 hours. Converting/transcoding time becomes heinous. Any help?
Thanks,
Terry