.mkv files acting like folders

[Cojafoji]

So, the external enclosure for my nas drive came today, and I dumped in the hdd. i booted up my pc, and there it was, with everything that i'd had on there months ago, when the network card on the nas crapped out. everything was fine, or so i thought. turns out the larger .mkv files, had somehow turned into folders? i google'd my ass off, but nothing turned up. yeah, so the inside of my hd mkv files look like this. it's like a folder that i can open up, but at the same time, when i tried to copy braveheart onto another drive, having forgotten that i had re-downloaded it, it told me that there was already another mkv file by the same name. anyway, i'm fucking confused as all get out, and i've pretty much run out of options :saddowns:.

anyone got the slightest clue wtf is going on?

http://img252.imageshack.us/img252/8897/65471472.jpg

e: nevermind. the nas's drive was fat32, and chopped them up.