Audio Track and Subtitles Names Translation

[TheDreadPirate]

However, the french translation is still stuck to "Fre" instead of "Français" (see attached).

I believe this is due to the github ticket I linked.  "Fre" is the ISO 639-2 "B" code for French, which Jellyfin does not use.  We use the 639-2 "T" code, fra, or the 639-1 code, fr.  You set the file name to "fra", correct?  I'm assuming "Fre" is in the subtitle file itself or in the subtitle metadata.