I was using MX but then I discovered BS player . The interface is pretty much the same as MX. Slide up and down,for sound and light . Slide across for changing the time or place you are in the movie. BSPLAYER plays the few mkv files I have and everything else I throw at it. I love it and it carries my initials so I am biased. He he

You're a legend dude!  BS Player is where it's at..  No conversion / messssing around with codecs etc.  Plays any format I've chucked at it thus far.  Lol @ the fact I initially thought you were trolling because of app name 

Edited for language.