As experience within my own system develops, tabs to switch quickly from one device to the next are present. There are macros called "movie," and "cd1" and "cd2" on the Krell main screen. Perhaps the most useful part of my particular plan is the Kenwood Sovereign integrated screens with the Entre and the 5900 changer. The buttons and icons are a combination of thievery from this site, the web, and relics of my old B&W Pronto. Daniel Tonks' buttons and joystick was greedily incorporated upon its release. Still a work in progress.