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               ERROR: WMP IS CURRENTLY UNABLE TO PLAY DVD
               VIDEO ERROR ID 0xC00D116A IN WINDOWS MEDIA
               PLAYER WHEN TRYING TO PLAY DVD

This is normally caused by a outdated 3rd party DVD decoder program
that is not compatible with Windows XP, to fix this issue try to find
a update to your DVD Decorder. You can normally do this by going to
the manufacturer of your DVD Decoders website and downloading the 
latest edition of their drivers.