VLC media player select audio track for conversion

Looking at https://forum.videolan.org/viewtopic.php?t=115385, the options seem to be to use:

Use option --audio-track or --audio-track-id in Open Media dialog:

[v] Show more options
Edit Options [ :file-caching=300 :audio-track=0]

The audio track number (0 in above example) seems to be the audio track number as displayed in the VLC Gui when displaying the movie minus one.