It doesn't look like there is a way to do this yet but it seems like the Beo5 is missing a menu timeout option for certain menus like on the Beo4 ( speaker mode etc.)  I think this would be an obvious addition to a remote that has so many menus.  Most likely a simple add on to the software.  Anyone else see this as a benefit? Not sure we have a voice in the matter however  as unofficial programmers.

Pressing the right button of the three ones in the screen (at the bottom of the screen), you will see some menus for Light, Speakers, Stand, etc. Pressing the Speakers button, a submenu appears with Speakers mode. I think it's what you are asking.

I can see the advantage. In the meantime, you could press the soft back button (I think) after switching speaker mode etc.