I've got a CS4 menu with a video background and multiple buttons. The problem is that whenever I bring a different button into focus the video background starts playing from the beginning.
Everything else is as expected: when I focus the buttons the subpictures come on, and clicking the buttons has the desired effect. I've not had this issue before (though admittedly I don't use Encore all that frequently, and not at all since CS3).
Screengrabs attached - if anything else might be relevant, please let me know.