I am having problems with DVD/Video. I edit files into a full movie - approximately 5 mins long. I drop in an audio file to use as background music and everything proceeds as it should. I then get the message that everything has saved as it should. When I try to play it back it starts ok and then starts to "stutter" and drop out. The same thing happens when you burn a DVD and play it on an external DVD player? Anyone out there know why ?????