QUOTE(danthaman673 @ Aug 29 2011, 11:05 PM)

matroska is an unstable codec at best, I have to use a variety of players PC To get a variety of files to play FMP, seems to be a good fall-back. The fact this works at all on 360 is amazing (To my mind) I think in the future, more attention will be paid to encoding in a 360 friendly manner, that should give the best results... If anyone has good success with any particular5 methods/settings/appps pls let us know :-)
Matroska isn't unstable, and it's not a codec.
Just out of curiosity, can it play strictly audio?