Install the VLC Player

VLC is in the Amazon app Store. MX Player is not, but you can download it using Downloader.

From the top menu of your Fire TV Screen.

Click on the Search symbol

Type the letters “VLC” then scroll down to VLC to select

Click “GET” to start the download
Downloading
Installing
No need to open,
Click your back button to download another app
or press the “Home” button when done

Try MX Player
go to “Downloader app”
Type in bar: http://bit.ly/bcm-mx
Go
Install
Done