fer some reason - i had a similar problem.
i have an s-video cable plugged into my tv as well, but when i played a mov on it, it was just a black screen (well, u could see the toolbar of the media player, but nothin in the box).
i started usin realplayer - and it works fine. move it 2 full screen and it's AWESOME. fer some reason, windows media player, quicktime - will not work!
