Pugged a USB drive into my T2 a few days back, with two .mkv files and and .mp4 file which I wanted to view. It refused to play the mp4 but to my surprise, played the mkv's. It.s never played mkv's before and the last thing I remember reading about this was that it was highly unlikely they ever would play mkv's. I have the latest CF, as far as I'm aware. Any idea's?