How to set which display an app opens on?

Hello. I have Boxee installed and i want it to only appear on my TV (HDMI output on graphics card), and no other displays. Is there a way i can do this? Really what i want is that display to not even be recognised by OS X as a "display", and only output my media software (Boxee) to it.

Im open to all suggestions.

Thanks
Chris

 

By the way, i tried SwitchResX and display maid but they didn't seem to work? ... with any app.