Sometimes the format of the movie is not compatible with the Media player. Just a few steps that need to followed.
Step 1. When you are in the PlusTv Premium
just click the Menu Button
on the remote.
Step 2. Go to PlusTv Media Player
and Select External Player
Step 3. Go to movie that did not have any Audio before, you will see a small window on your TV screen. Please double click on the MX player. You should be able to get the Audio now.
Note: Please keep in mind This player is only recommended when there is no Audio in a particular movie. At other times you must have the Mediaplayer set to IJK Player.