If you have upgraded to Mac OS X v10.6 Snow Leopard and you use iPhoto ‘08,* playing videos from within iPhoto by double-clicking them may not cause them to play. You will need to install QuickTime 7 (an optional install from the Snow Leopard Install Disc) in order to continue viewing videos in your iPhoto library. *Note: Watching videos in iPhoto ‘09 (version 8.0.4 or later) can be done without any additional installs of QuickTime.
