I created a snagit video and sent it utilized movie maker's narration function. After narrating the narration the file saved as a wma.  I saved my work to "video's". Later wanting to edit the narration I went to video file and had to select all files to see the saved WMA files. When I attempted to open the file I received the error message "Movie Maker doesn't support the selected file type".  Can someone help me? Thanks!