How to fix dropouts in imported AVI files?

I am having audio problems on imported AVIs. Using FCP4, i have imported some 45 min AVI files and rendered them on the FCP timeline.  ON a timeline of 7 subclips, the first 4 clips play and the remaining 3 clips are silent, even though all display waveforms.
And there's another problem. Of the first few clips that DO play, there is a choppy dropout happening, like the audio drops one frame every half a second. It's a continuous rough and choppy playback effect on the audio. The video portion of the files is fine.
thx
John

Try converting the AVI files to a QuickTime codec that matches your FCP Sequence settings prior to import.  AVI is a wrapper or container the hold A/V content that could have been made from any number of codecs, not all of which work with FCP very well.  Chances are that the files you imported are one of those.
Also make sure that the files you import are not on the boot drive (desktop, user's home folder, etc) and that all hard drives have at least 15% of free space available.
-DH

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