I ripped the BD of "War Of The Planet Of The Apes" to mkv format using the default settings (Title 850, all English language sound formats (5.1, 7.1. etc). When I started watching the movie I realized at about 13 minute mark there was no subtitles for the Apes. So I went back to computer to re-rip using the Clone BD preview player to find the correct subtitle tracks. But now I can not find any combination that doesn't show all language subtitles in the preview Player. Even with all languages unchecked and all subtitles unchecked, I still see subtitles for both human and ape. I exited the Preview player completely and restarted thinking maybe had something to do with clearing cache but that didn't solve the problem. I did manage to get subtitles to show for deaf (meaning text describing the scenes and noises, as well as spoke words). But no matter what I do with turning on or off specific subtitles, the human spoken words still show. I assume that the Preview Player is there so I can test out the combinations of languages and subtitle selections, but it does not work as expected. My selections of subtitles do not seem to change anything. Please explain how to use this feature. I just want subtitles for Ape's speaking. I think it would also help others if you had something in the tutorial section on this.