techidave: tv_out is not made to be always running so the current script can't have built in hotkeys. I could add that as an option but it might also be confusing to build in such a "always running" mode. I'll think about it next time I update the script.
In the meantime, here are two quick, external ways to get a hotkey:
1. right click the tv_out icon on the desktop > properties: set up a hotkey. I think that should work, though there are some limitations in what hotkeys that can be used.
2. use a custom autohotkey helper script (save code as somename.ahk, compile (requires autohotkey installed), put in some folder, then add a link to it to your autostart folder) :
The example above uses win + 1 as hotkey. But any hotkey can be used by changing the row "#1::" above, see http://www.autohotke...com/docs/KeyList.htm
for details on hotkeys to use.