linux - How to play a movie listening to two sound tracks simultaneously?

I have movie files with multiple audio tracks (in the MKV container). I want to watch a movie while sending one language to the speakers (for the kids) and another language to the headphones (for myself), keeping the tracks in sync if the movie is paused, etc.

Assume my system already has two audio outputs properly configured.

Is there a way to do this with a media player in Linux? I have checked MPlayer and VLC so far, and they only support selecting one of the available audio tracks.

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