Sync in wrong language

I have several movies I synced with my android tablet. The movies have two language tracks, one in English and one in French. On Plex web or Samsung TV app, I can choose English. When the sync was completed the movies converted and synced to my tablet in the french language only.
Where/how do I set this to convert in english?

You must select the desired language for audio and subtitles before you sync the movie.

If your files contain proper language identification tags, Plex can do this for you automatically as well.
https://plex.tv/users/profile