ehshell.exe command line

Is the a command line option to do this? poking around on the web I found posts of how to start WMC in live TV mode or how to bring up the guide, or to default the startup page to a given WMC area -- but no dice on actually having it to start playing pictures.

Also, I'm curious if someone has a concise list of all of the command support by /mcesuperbar

I've only be able to come across the following two:

/mcesuperbar://guide -- starts WMC in the guide mode /mcesuperbar://tv?live=true -- starts WMC in live TV mode