I installed ffdshow and haali on my computer so that I could watch MP4 files in WMP. It works fine, but my library won't recognize MP4 files as media files. In order to play MP4 in WMP, I have to tell the "open" dialogue box to look for "all files" rather than "all media files". Is there any way to change this? My goal is to be able to view my MP4 video files as thumbnails in my WMP library.