If they are from a game, chances are they can't be decoded because they weren't encoded like regular Vorbis Audio files. I could try to find out how to properly play them if you could tell me from which game these files are.
Edit: It's also possible that the file was encoded a second time, and is then decoded by the game engine, and then decoded again by the codecs so it can be played. I couldn't find any information regarding the header of the file you have uploaded, so that's a possibility.
Edit²: After googling for the file name, my guess is that you want to listen to the Aion soundtrack. Am I right? If that's the case,

may help, especially

(check out the "[UPDATE]" part of his post). Should do the trick.
Edit³: If that doesn't work, follow the instructions in

.