Hi. I had a WMM project saved before some months (around 2) and i recently made format to my pc and reinstalled Win7.

Today i downloaded the WMM from microsoft (latest version i guess) and loaded my project without any problems. I also added some video files with no problem aswell. At preview video everything is fine but when i save the project as movie (.mp4) i've got a problem with sound because its ahead by 1 (or 1,5) sec from the video which means they are not synchronized. How can i fix this? Thanks