Piracy: ꜱᴀɪʟ ᴛʜᴇ ʜɪɢʜ ꜱᴇᴀꜱ

I have heard before there might be a way to get audio tracks for movies. I already have a sizable collection (nothing worthy of datahoarding) and would like to add a foreign language for my parents (French). Subtitles are already taken care of with Bazaar, that's a big help. I use Plex and Jellyfin is my backup.

Often I can find multi-audiotracks files, original+french, but it greatly limits my choices if I am trying to do one library. I could also create a completely separate French library, but trying to avoid that.

What do you think? Is downloading audio tracks a viable option?