I've been trying to watch Gundam Seed episode 1, I downloaded it and it runs fine, but the audio is in english. (the subtitles are also in english) I would like to know how to set it to run japanese audio with english subtitles. I downloaded the episode from boxtorrents and I would assume it is dual audio. (or at least hope) Thanks.

(actually it is an mkv file, not ogm. my mistake)