FYI
Had to layoff an 3 year old timeline today and encountered
"No Movie in File" mid way through
After repeated attempts to export a video clip and re-introduce it to the time time.
(as this is were the sequence stopped)
I found an mp3 file in the timeline.
So it was not Video but audio.
This was a FCP 5 Sequence
interesting for me because I convert everything into 48k
guess I was sloppy in 2007