>>5
This probably isn't the "correct" way to do it, but it worked for me:

Grab the ttf version from here... http://sourceforge.net/project/showfiles.php?group_id=55807
(eg: monafont-ttf-2.90.zip) ...and then unzip it.

 mkdir /usr/share/fonts/truetype/mona
 cp mona.ttf /usr/share/fonts/truetype/mona/
 fc-cache -v