According to 9to5Mac, OSX Lion will no longer include the FrontRow app... but a reader found the pieces and rebuilt it... here's the story and the link to the files:
OS X Lion kills Front Row… here’s how to get it back! | 9to5Mac | Apple Intelligence
Front Row Enabler for Lion - Mac-Hatter Consulting, LLC.
OS X Lion kills Front Row… here’s how to get it back! | 9to5Mac | Apple Intelligence
Front Row Enabler for Lion - Mac-Hatter Consulting, LLC.