Ok the title pretty much summarizes my question. I frequently have to switch my sound output device from Line Out to Headphones. I know all about the Option-Click of the menubar icon, but what I really want is to assign a hotkey to cycle through them (similar to the alt tab program scroll) when I can't easily get up to cross the room for my mouse. If it helps I use a Logitech DiNovo Mac edition keyboard. I've looked all through it's prefpane but it doesn't have an option to switch sound outputs. If there was an unknown keyboard shortcut to switch outputs then I could easily just assign it to an Fx key.