rpm.livna.org is a repository of add-on packages for Fedora maintained by a group of volunteers. rpm.livna.org is not a standalone repository, but an extension of Fedora (previously Fedora Core and Fedora Extras). rpm.livna.org distributes packages that have been deemed unacceptable to Fedora due to licensing or patent issues.

Here is how I add the Livna repository to Fedora 8:

Go to http://rpm.livna.org/rlowiki/ and download the Fedora 8 Repository RPM.

Use Yum to install the RPM (as root):
$ su Password: # yum --nogpgcheck install livna-release-8.rpm

If you want to avoid the GPG warning whenever you install something from the livna repository, you can import their GPG key. Go here to access their public key, save the contents of this page to a file (e.g. livna.asc).

Import the key.
$ gpg --import livna.asc