Applications :: ITunes Video (fullscreen) Disappear When Close VNC Connection Under Windows

Have a PC hooked up to a Pioneer plasma here, and it's basically used to loop trailers in my video-store. The PC is running Windows 2003, and I thought iTunes is probably perfect for this as all the trailers I use are the 720p ones from Apple's servers. So I connect to the PC with VNC (no mouse or keyboard attached), start up iTunes, start the playlist with the videos and they start running fullscreen. But whenever I close the VNC connection the video window disappears from the Pioneer and I just get the desktop + iTunes. The videos are still running though, as the sound is playing and iTunes say they're running, but the video is completely gone.