So, I upgraded to iTunes 9, in accordance with the diktats of Steve Job, and, on first run...
What is this nonsense? Why is it showing me an imaginary website?
Also, they've changed all of the icons. Eek. Oh, and the progress bars.
It's still 32bit, though, and thus presumably Carbon; I'm sure they'd have gone 64bit if it was Cocoa, if only to take full advantage of the latest Quicktime stuff.