No looping, though they are MKVs. Sometimes there would be working audio and no video. I tried Media Player Classic Home Cinema, as well as VLC and neither worked. They both broke at the same place. Since that happened, I deleted the torrent. (Though it's only in th erecycle bin, for the moment). I guess I should try something else, just to see. I'm downloading the Mplayer for Mingw32 right now, just to see if that works, since it's quite a bit different than my other media players. (I've got MPCHC, Zoom Player, VLC and WMP)
Fake Edit: Just tried it in Mplayer. It still fails to render a bunch of frames. I just caught the errors as I closed the window (not used to working with programs that have a console screen running like that, lol).
So yeah, the files are quite broken.
Edit: Watching Toradora. Damn that show is addictive. I've seen quite a few of Kugimiya Rie's newer shows, lol. (I'm more used to referring to her in japanese order, lol).
Edit2: Retested the broken files. Realized they aren't MKV. They're AVI, and the error was that the Header was missing.