I have a Zune 80 and I just recently ripped some videos from my DVD's and then converted them to .mp4 format to put on my zune. Which synced successfully. However, when I watch them, they are in like slow motion. Like 1 second in the video is 10 seconds for me. The audio lags at the same rate. Help? Is the video size too large? They are about 700 mb each.