not really sure; in apple firmware it appears to me that you page back and forth through menus using the menu and select buttons. i don't have any itunes music on it, so i can't access my songs through the apple firmware that i know of.
in rockbox, when I want to go up a level in a directory, the menu button takes me back to the main menu, not up a level. I had been using the back button with my rockboxed sansa clip, and expected similar behavior with the ipod. maybe there's a way to change that?
appreciate the response!