Hi, whenever I turn off Windows Media Foundation, I get a strange transparent grey bar (I can see the bottom of the video behind it whenever I play media with Windows Media Player, whatever codec I use. (I'm using LAV at the moment). How can I get rid of it, and what is it for?

EDIT: Solved the problem. I had "Show lyric and captions" turned on in WMP. Turns out after disabling it, I had to seek again for the bar to go away.