I need a video tutorial to play in Firefox, which it will not. I read that the server needs to have the proper MIME type extension. I did a search and the following page (http://support.microsoft.com/kb/288102) gave me a few:
Are you sure that you have the proper embed/player software within the page~? The MIME type entry won't promise to make the video play within the page but rather that the MIME type will be understood as a particular kind of file. In the case of the examples above, the Web server will understand that the file is a video file and either Windows video, Windows audio or whatever you specify within the type.