It's not a problem with your dvd player, or with Impression. You are using true color menus, and the only way allowed with the dvd specs to have such menus is for Impression to essentially create a new menu for every button (behind the scenes). Every time you select a new button, you are actually going to a 'new' menu, and the audio will restart. It's best to simply use a silent audio stream if you are going to use true color menus. If you use highlight menus, then the audio won't repeat as you select different buttons.