This is just a stop-gap measure until I think of a better way to deal with the requirement. I need an application that runs on the Media Server that will show the list of available files mounted from the SD card and then play one using omxplayer. one. After it plays it will need to restart X because omxplayer takes over the framebuffer and X won't be able to update. The media server should only allow this if the HDMI is plugged in. The app will launch from Matchbox's side panel. The side panel will send a notice to appmgr to launch the video player.