I installed MediaLab (version 2004) on a new computer and copied a file from another computer with the same version of MediaLab. The files work fine on the old computer, but the videos do not play on the new computer. I downloaded the newest version of Windows Media Player (11) and DirectX, and still nothing. I get a brief flash, but no video or sound. I ran diagnostics and no problems were found. The video plays in WMP when I only open the video and do not try to access through MediaLab. I have Windows XP. I converted a video file to .avi (they are in .wmv now) and that didn't work. Any other suggestions?