How to Register an ActiveX Object as the Player for a Media Type

"This topic describes how to register a Microsoft ActiveX object as the viewer or player for a particular media type (Multipurpose Internet Mail Extensions (MIME)). This registration is essential for Microsoft Internet Explorer to launch the correct player when interpreting the standard HTML A HREF tag or the Netscape-introduced EMBED tag. Without this registration, it is impossible for Internet Explorer to guess what application to use to display or play an unknown media file. The registration process associates an ActiveX object with a given MIME type or file-name extension so that Internet Explorer or any other ActiveX control container can launch the correct player for files of that type. Internet Explorer first tries to find a match for the correct media type; if that is not possible, it uses the file-name extension."