This time, the conversion was done automatically, to mp3 as dictated by the profile.
So --autostart may work, but it shouldn't be necessary to specify --output since the profile already contains that information: specifying --output after specifying --profile is redundant.
Tried yet another experiment, specify only --profile and --output, like this:
soundkonverter --profile 'mp3 extreme' --output ~/stage/edit/ --autostart ~/stage/ edit/CoplanTown er-song_ flac/MARC\ COPLAND\ \&\ RALPH\ TOWNER\ -\ Song\ Without\ End\ \(1994\ ).flac/ *.flac
This time, the conversion was done automatically, to mp3 as dictated by the profile.
So --autostart may work, but it shouldn't be necessary to specify --output since the profile already contains that information: specifying --output after specifying --profile is redundant.