I just did a fresh install of 12.10 and are now left wondering how to set mplayer as a global default application for video.
I created a mplayer.desktop and added the same categories as totem has, however still no luck selecting it from the detailed Settings.
A similar problem is with thunderbird, which Id like to set as default calendar app. However I can only select gedit, for whatever reasons.
Any help would be very much appreciated!
Thanks
Best Answer
Find a movie file, right click properties, open with…, set default.
Repeat for each movie file format.
TO set it as default, modify your mplayer.desktop like this:
Log out and in again. You should be able to set it as default.
Source: http://ubuntuforums.org/showthread.php?t=1878236