The problem is that Fedora Extras now includes FAAC and FAAD2, but those versions are not compatible with mplayer. Because the Extras version is later than the livna version, the incompatible versions replaced the good versions.
You need to install the livna versions. Add this to your /etc/yum.repos.d/fedora-extras.repo and /etc/yum.repos.d/freshrpms.repo to insure you only get these updates from livna:
exclude=faac faad2
Then replace the bad versions with the correct versions:
Code:
rpm -Uvh --force http://rpm.livna.org/fedora/6/i386/faad2-2.0-19.20050131.lvn6.i386.rpm http://rpm.livna.org/fedora/6/i386/faac-1.25-2.lvn6.i386.rpm
You shouldn't experience the problem again.