I am trying to convert several MKV files so I can stream them on a Roku or XBOX360. I host the movies on a Buffalo NAS Linkstation, which has many other files (including MP4s from other sources) that play fine.

The program created an mp4 file of similar size to the original mkv and it plays fine on my PC, but doesnt work when streaming from my NAS to either my Roku or the Xbox360. The audio isnt there on the Roku and the Xbox just doesnt recognize it as existing.