Audio sync problem when exporting between FCP6 and Soundtrack

Hi, I'm a newbie to this so apologies for any glaring errors.
I've recently upgraded to FC studio 2 and have exported the audio of an existing 20 minute custom format quicktime project (720x408, 30fps,) to soundtrack for sweetening.
Trouble is, when returning the audio back to FCP, the audio is shorter by several seconds and therefor totally out of sync! I've also tried outputting the multitrack audio from within FCP and bringing it back in as a single file and this is also out by several seconds. The output settings are the same as the project.
If I do nothing to the audio and simply send it to compressor; the M2v and it's aiff play in sync in Quicktime.
Any ideas or work arounds?
Thanks in advance for any advice.

Check you have the very latest version of QuickTime (7.7.1 at time of writing): QuickTime 7.7.1 for Windows
Cheers,
Neale
Insanity is hereditary, you get it from your children

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Well I'm a hard-core Apple user from day one, but unfortunately today I'm not to proud about the latest version of Imovie 9.
It seems there has been a "MAJOR audio sync problem on export" in Imovie 9, since July 2009. Apple knows about this bug for a long time now, but didn't release any bugfix yet!
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Scott:
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I never really found a solid cause/solution, but if you're noticing that you have a couple of white frames at the end of your Quicktime exports, then you're probably suffering the same problem I have. Tech people I have checked with have suggested that the problem may be related to the use of .mp3 sound files (as opposed to .wav) in the Premiere project, but after removing them and replacing them with .wav's the problem persisted.
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Last edited by sultanoswing (2013-11-13 06:15:11)

Audio sync problem when exporting between FCP6 and Soundtrack

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