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No, no AFAIK.
No to both questions. It's what I do myself.
Boy, that was helpful, huh, Matt?
There may be a better way but my suggestion is this: Pick a point at which the "out of syncness" becomes noticeable; make a small audio edit only and take out a few frames of ambient sound. You can do this as many times as you like (or you have time for) and by the end of the video, it should be less annoying.
It should also be a hell of a lot more work. Speeding up the CD track by a few hundreths of a percent (mine comes out to 100.04%, Matt will have to experiment with his) won't affect audio quality and will sync the entire track in one shot.
I've never had to do anything as long as a wedding, as far as syncing CD audio--just dance performances that are usually less than 5 minutes, so I don't notice any drift. I don't know if this will work or not, but it might be worthwhile trying to resample the CD audio (which is 44.1kHz) to 48kHz.
Use your CD ripper of choice (CDex, for example) to extract the audio to a PCM WAV file, and open that up in your preferred audio editor (Audition, Soundbooth, Audacity, or whatever). Save the file back to a PCM WAV file, but set the sample rate to 48kHz. Import that file into PPro and replace the original version, then check for "unsyncing". As I said, I'm not sure if that'll work, but it's worth a shot.
>it might be worthwhile trying to resample the CD audio (which is 44.1kHz) to 48kHz
If done correctly, the resampling should not have any impact on the length of the track, only the top end of the frequency range. It'll go from 22 KHz to 24KHz, which no one is likely to notice. So this technique will also likely be a waste of time.
To reiterate, adjusting the speed of the CD track by the amounts required will have no audible impact on sound quality, and is the best method to achieve sync in this case.