To Turn Subtitles On or Off
Scroll up or hit * on the Roku remote to bring up the top menu. Select "Settings"
Make sure Closed Captions are set to "On"
During playback, hit * key on Roku remote to bring up menu. Set closed captioning to "On Always" or "Off"
To Change Language
During playback, hit * key on Roku remote to bring up menu.
Scroll down to "Captioning Track", scroll left or right to select language.