Originally Posted by bleu8888
Would you expalin more detail about problem on FireTV?
Problem is common for all Android based Set Top Boxes (FireTV, old GoogleTV, recently announced Android TV, etc.) - they don't have touch interface.
These devices use remote controlls which allow to navigate with Arrows(D-PAD), Enter button and Menu button.
It is impossible - using this navigation - to reach some of MXPlayer menus: I'm unable to switch audio stream, subtitle, HW/SW decoder, etc.
Some details regarding D-PAD navigation: