Cooldog, here's what I have.
Vista, latest XL build of 1/23. This is a client on my everyday work PC.
Display 0 is a touch screen and has XL at 800x600.
Display 1 is my primary screen at 1680x1050.
I can tell XL to live on either screen.
ATI Radeon HD 2400 Series.
Now, trying to run the media player on the 2nd montior (display 1).
Tick media player in setup to go to 2nd monitor. XL goes black until I touch it in the tray of display 1.
Restart XL and run a video. No video anywhere and the media player's controls don't function. Audio works but cannot be shut off until XL is closed.