I have made my 1st Moho animation, and I used Papagayo to lip sync it.

When I play the animation in Moho, everything is fine and it is nicely synced.
But when I export my animation, I find that the audio and video are no longer synced, I exported in the AVI format. I know there is a way around this because I have seen well synced Moho stuff,
Please help if you can
Thanks