First four seconds of audio missing when exporting project as MPEG2

Hello all-
When I export my project from FCP (using version 6.0.6) using Compressor's (v. 3.0.5) MPEG2 Program Stream setting, everything works fine except for one slight problem: the first four seconds of audio are missing. I've looked back over my timeline (NTSC-DV with 4 tracks of 48khz 16bit audio), everything is fine, and the audio exported just fine using the H.264 codec. I've tried everything I can think of. Any suggestions?
Thanks so much,
Brett

Well I REALLY need some help with this one! I have tried so many different 'work arounds' without success. As mentioned in my first post the audio is not sync'ing with the video when exported. I have tried Exporting the file in QuickTime, I have tried using Compressor again exporting just the video then the audio - pulling it into a new session and lining it up again but everytime I pull it the newly exported file into a new project and render it FCP crashes not allowing it to render (nice!). I actually started from square one capturing the video footage again and assemble the project again without luck. I simply cannot believe what a pain in the arse this is!! I need to get this project done and it simply won't do it.
Where are my blood pressure pills????

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Well I REALLY need some help with this one! I have tried so many different 'work arounds' without success. As mentioned in my first post the audio is not sync'ing with the video when exported. I have tried Exporting the file in QuickTime, I have tried using Compressor again exporting just the video then the audio - pulling it into a new session and lining it up again but everytime I pull it the newly exported file into a new project and render it FCP crashes not allowing it to render (nice!). I actually started from square one capturing the video footage again and assemble the project again without luck. I simply cannot believe what a pain in the arse this is!! I need to get this project done and it simply won't do it.
Where are my blood pressure pills????

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I've answered my own question, it was a lot easier than I thought. After the first encoding by Handbrake, there's really no difference between calling it a mov file or m4v file. I can change the file extension at will and there's no need to do an export that mashes the audio tracks. It's only AppleTV that needs to see the m4v file extension, Quicktime and iTunes doesn't seem to care one way or the other.
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