When playing the video on my computer it all works fine, when I put it into Movie Maker the sound is making a loud hiss noise and the audio is very slow. I went to videos I already had in Movie maker and some worked fine and others had the same problem. The ones I added my own audio to works, the videos with the audio already on it did not work that worked in the past? The videos the does not work came from a Sony DSC-W55 camera. Used Movie Maker in the past and had no problems at all... Please help Aaron