rpm.livna.org provides many useful packages that can not be distributed in Fedora (previously known as Fedora Core and Extras) for one reason or another, including multimedia applications such as xine and VideoLanClient, and video drivers for ATI and Nvid
If your windows are always starting under your panel, you need to activate the 'Place' for either Compiz or Beryl. HINT: The gconf entry is here: /apps/compiz/general/allscreens/options/active_plugins (just add 'place' to the list)