In the audio section, there is a settings menu above the audio list. there you need to select all the languages you want. If you are unusre, you can also press the “All Trakcs” button to get all tracks, but that might lead to duplicate tracks.
And I like to make sure to set them to pass thru (of whichever codec is native to the stream) to avoid re-encoding. AAC Passthru for instance.
I’ve not found a way to do this for “all” tracks, and have to use the pull-down on each track to choose it.
In the Audio Tab, click on “Selection Behaviour”, then for “Track Selection Behaviour” choose “All matching selected languages”. To get AAC Passthru, click the “Add Track” button on the bottom, then switch the Encoder that appeared to AAC Passthru, or Auto Passthru, if you want to pass through all audio tracks
