That's something different.
Obviously, /usr/bin/soundconverter uses GTK+ ("import gtk") which tries to initialize the GUI framework for X. I dunno whether the "batch mode" has ever been supposed to be a real CLI mode that works without X running.
That's something different.
Obviously, /usr/bin/ soundconverter uses GTK+ ("import gtk") which tries to initialize the GUI framework for X. I dunno whether the "batch mode" has ever been supposed to be a real CLI mode that works without X running.