I am trying to create a video using some footage I captured with my Canon PowerShot camera.  The footage is standard def (640 x 480), and the camera makes them into .MOV files.  I copied them to my computer using the memory card reader and imported them into Windows Live Movie Maker on a Windows 7 system.  They play fine in Windows Media Player, but when I bring them into Movie Maker, there is no sound at all.  Even if I make a movie with all of the files, still no sound.  The version of Movie Maker is 14.0.8091.0730 (obtained from the "Options" menu).