It works without troubles on my PBG4 😛
It's definitely not useful, and it's not very dynamic... it sort of sticks at the same level most of the time. Also, don't turn on the screen visualizer. Seizure. 😱
Thanks for that link, quite fun. 🙂
edit: There is a glitch though. I've found that changing tracks in iTunes even with the visualizer off, turns off the backlight. Removing it from the plug-ins folder and relaunching iTunes fixed this... 😱 Menuet also crashed while running it, but I'm not sure that's related...