RE: realign audio/video
It sounds as if the video isn't running at the correct frame rate - if you don't know what it should be I think virtualdub can calculate it by matching the audio length to the video length.
(The other possibility is someone reencoded the audio using a source with a variable bitrate - you'll know if this is the case if the audio drifts in and out of sync. I'm not sure how to solve this one.)
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