Paul Howarth wrote: ..
According to the big red box near the top of http://rpm.livna.org/configuration.html, anyone using livna.repo also needs to use the fedora.us repo.
If you follow the link in that big red box you come to a new box saying: Don't do this in FC3 :-)
So it does. Strange then that since the OP was already using "fedora-extra-repo" (sic) the requisite libraries weren't found.
Mustapha, is your file for the fedora extras repository called "fedora-extra-repo" or "fedora-extra.repo"? It should be the latter. If renaming doesn't fix the problem, please post the contents of your fedora-extra.repo file.
Paul.