Livna merged with two other 3rd party repositories into RPM
Fusion ( http://rpmfusion.org/ ) -- all packages that still
have someone that takes care of them have been moved to RPM
Fusion and deleted from the Livna repos. You can easily
enable RPM Fusion by installing the two rpmfusion*release 
packages that you can find in the livna repos; in fact, yum 
should have installed those automatically for you already.

Note that livna for the forseeable future will remain. It
from now on just contains one package that is not suitable 
for RPM Fusion.

Thorsten Leemhuis ( fedora [AT] leemhuis [DOT] info), 20081109