Well Fedora never ships with the third-party repositories, since the mirrors contain some illegal stuff. Basically it’s a lot easier to install things like mp3 support, graphics drivers for you nvidia casrds and ofcourse your trusty mplayer or VLC player.

Generally speaking two repos are popular, out of many available repos! Livna & Freshrpms, no one has an advantage over other in reality, but you MUST keep only one of these repos enabled at once or I’m sure you’ll go to a forum regarding some dependency issue…

So to setup Livna:

More Here.