Notes about the XMO file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The XMO file type is primarily associated with 'Authorware' by Adobe Systems Incorporated. Authorware was a Macromedia product. Macromedia was taken over by Adobe. Movie drivers are necessary when showing Authorware-produced movies. Generally, the XMO file name will start with A5, A6, A7... indicating the version of Authorware used to produce the movie. The rest of the name will indicate the type of driver: vfw32 = AVI, mpeg32 = MPEG, wmp32 = WMV, qt32 = Quicktime and maybe others.