My main system at work is up to date now, thanks to some help with missing multimedia tools and various other applications.  Two sites helped with this: The Fedora 7 Installation Guide and Fedora 7: Installing multimedia Support.  Both are well written and very helpful, but not absolutely complete.  Neither mentions adding ATrpms to your repositories and the former says to use either Livna or FreshRPMs, but not both.  Turns out that some of the things that guide says to do require livna, so if you choose FreshRPMs then, yes, you do need both.

Anyway, I wrote a little shell script to grab all the missing pieces.  You need to run it as root, of course, because it's installing software.  It first adds FreshRPMs, Livna, atrpms and the flash Player repository to the list of yum repositories.  Then it manually installs Microsoft fonts and various firefox plugins.  I then install Dia and GQView because I prefer these apps to some that fedora defaults to.  Next comes all the multimedia support, specifically the ability to play MP3s and DVDs.  I also add a tool for burning DVDs, but I've never used that one before.  After that I install a few interesting networking and office tools.  I included links to a few items that have to be installed by hand because the download URL is behind a web interface and not directly accessible.

It should install cleanly, but remember: Caveat user!  I'm not responsible for trashing your installation!  READ THE script FIRST before using it.