Itunes video -- audio is out of sync

I've downloaded three "The Office" episodes over the past two months.
When I first downloaded an episoded it played back fine.
The most recent episode, I noticed the audio gets ahead of the video.
I played back the first episode I downloaded and the video-audio sync is off on that, as well.
Any suggestions?
I have the latest Itunes and quicktime running on my pc.

As you're running the current versions of QT/iTunes
contact iTMS CS:
http://www.apple.com/support/itunes/musicstore/video/
Thanks
Yeah. I saw that QT wasn't up to date so I installed the new version and it didn't help.

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Itunes video -- audio is out of sync

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