IPod Hacks: iTunes Visualizer Across Multiple Monitors
* Open System Preferences
* Click the Uiversal Access icon
* Click the large "Turn On Zoom" icon at top-center of the Universal Access window
* Open iTunes, play a song, and turn on the visualizer in window mode (not full screen)
* Hold down the Command and Option keys while tapping the "+" key a few times to zoom in on the iTunes window
* Use the mouse to center the iTunes visualization window so it spreads across all active screens (resizing the iTunes window may be needed)
* Voila! "Full screen" visualization across multiple displays
