To add your player with your movie, and that this one shows the language and the flag in the cover of the home, it is very easy.
You will have to go to Movies
and choose the movie in which you will place the player, then you go to the lower part where you will find the Links
section, there you will click on Add link
Now choose the movie icon
, select the language
, then the quality
and finally place the link with the iframe of your movie player
When you save it you will notice that, in the home page of your website, the cover will have the language (the little flag)
and the quality
of the movie.