Unable to find how to change playback preview audio language in LosslessCut

[slrslr]

The fewer issues I have to read, the more new features I will have time to implement, so I ask that you please try these things first

• Try with the newest version from GitHub (also it might have already been fixed in latest nightly build)
• Read the documentation and FAQ, Known issues, Troubleshooting
• Search for your problem under Issues or Discussions
• This problem happens with all kinds of files that I try. For problem only with a particular file or type, use this other form instead

Operating System

Linux

Steps to reproduce

At #256 (comment) @mifi says "switcing between audio/video tracks implemented!"

In my LosslessCut 3.69.0 i am unable to see any button inside video preview to define (default) audio track language to use during preview/playback.

(the non-english language code is obfuscated on image, but it also has valid three letters)

I do not want to convert/recode the video to preview it in LC.

Enabling just non-english audio track on above image, does not change english track to non english one in a preview playback.

I have LC interface language set to non-english one and despite available audio track language is matching my LC interface language, it selects english audio track. MPV and ffplay (without any lang. related switches) selects non-english audio track correctly. ffprobe output is here.

Expected behavior

automatic detection of a correct language/way to set default language
or
language switcher button for a playback preview in LC

Actual behavior

unable to find how to change playback preview audio language

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