I am using Linux Mint 19.2. In windows I can output a single file with multi-channel output, but I don’t seem to be able to do this in the Linux version. Is there something different in the Linux software?
For multi-channel file output, you need to enable “Use custom mix:” in Preferences. See: https://manual.audacityteam.org/man/import_export_preferences.html
Thanks. That was new to me. I guess it’s been over a year since I exported a file.