I would like to make Option+clicking the Volume icon in the menu bar show me all AirPlay output devices. Right now, only "Internal Speakers" and the last used AirPlay device are listed, so either only my Apple TV or AirPort Express:
Going into Sound Preferences I always see both the Express and my Apple TV. Only after selecting one there, it also appears in the Option+click menu, but then the other is no longer listed there. Also, whenever using AirPlay Mirroring (which has its own icon in the menu bar), the Apple TV is added and the Express disappears.
Any trick to make both available in one click? Or at least make the Express stick there? (I can select the Apple TV using the AirPlay Mirroring icon.)