Please help with the action that can be used to exit MM. I believe for XBMC the action used is "XJson.ExecBuiltin".
Generally, you can quit programs using the core action Window.Close. http://voxcommando.com/mediawiki/index.php?title=Actions#Window
You may need to double-check the process name for Media Monkey on your computer. For me, it's MEDIAM~2 .
I just looked it up in the Task Manager processes tab.
Thanks nime5ter