: Use the MKVToolNix GUI to manage your media containers.

: You can select both tracks to have a multi-audio file.

To enjoy Iron Man in Hindi when your video file only includes the original English, you can either "install" the Hindi track permanently into the video file or play it as a separate external track.

: Click "Play." To hear the Hindi audio, right-click the screen, go to Audio > Audio Track , and select the second track. Method 3: Permanent Integration with VLC

VLC media player select audio track for conversion - Super User