It's not highly important, but if it's not to difficut, it would be great to build in a option in AnyDVDHD which switches the button-audio off on HD-DVDs as standard. That's because, if I set the audio volume of the menu or the film to the perfect level, then the sound of the buttons is usually so high that it's more annoying and uncomfortable instead of "cool". And till you switch it off manually, your ears are already bleeding.