What's the easiest way to resync audio

[Eyepop]

I was just wondering what people's thoughts were on the easiest way to resync the audio of a file. The audio extracts fine but a bunch of the videos I have the audio is off and I was wondering what the fastest way to resync the audio is?
8)

[narked]

Describe the problem more, out of sync for part of movie due to corrupt data? or out of sync throughout whole movie?

[energy80s]

It also depends on whether it is a constant sync problem or a gradual sync problem. They both require different fixes.