The short answer is "you can't get there from here"! As the last poster said, you get media codecs for Fedora from here:
Your problem is that you have Fedora 10 but the current version is 17. RPMfusion doesn't support anything older than 15, so you need to re-install the current version of Fedora. If you install Kororaa
, that gives you Fedora with all the codecs and similar things already installed.