VLC and --sout-all to play multiple audio tracks in recording

[OttoR]

I'm on Windows 10, running latest (I hope) VLC 3.0.20 Vetinari.

I have recordings made in OBS with multiple audio tracks. I'm trying to play these using VLC, but get, of course, only one audio track at a time.

Searching has brought me to multiple sources, including a forum post here (https://forum.videolan.org/viewtopic.php?t=145140) suggesting that the following command line might resolve the issue:

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vlc --sout-all --sout #display

I put this in a Windows .bat file as follows:

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ECHO vlc.exe --sout-all --sout #display %1% pause press enter to run vlc.exe --sout-all --sout #display %1%

Dragging and dropping my recording file on this, I see the following output, so I'm assuming everything works as intended:

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C:\Program Files\VideoLAN\VLC>ECHO vlc.exe --sout-all --sout #display "E:\OBS\Videos\2024-01-31 07-42-51.mp4" vlc.exe --sout-all --sout #display "E:\OBS\Videos\2024-01-31 07-42-51.mp4" C:\Program Files\VideoLAN\VLC>pause press enter to run Press any key to continue . . .

Unfortunately, VLC launches and plays only the first audio track.

I've tried searching the wiki for additional documentation, but the --sout-all parameter fail to come up in any search I performed.

Any suggestions on what I can do next? Thanks!