Movie audio problem

1

I imported a somewhat lengthy video into my flash. Everything was going fine and then I exported the movie so I could see if the video was working properly. When I started watching it I noticed that the sound was off sync. I checked the original video file to make sure that the audio was synced up, and it was. The video file was .wmv format, I was just wondering if anyone else has had any audio sync problems with imported video files as well. Would adjusting the quality (size is no issue) to 100 help? The only reason I ask and don’t try is that it takes a rather long time to import the video and I wanted to see if anyone had any feedback regarding this problem.