One question: Did you watch an actual rendered version of your test? I'm asking because the preview isn't always accurate when it comes to the speed and that may be why the audio seems "ahead"

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You just can't put the words "Poserites" and "happy" in the same sentence - didn't you know that? LaurieA
  Using Poser since 2002. Currently at Version 11.1 - Win 10.