would it be possible to display the volume control in landscape format as well? Actually, there would be enough space for it below the progress bar. (In portrait mode the volume slider is displayed).
Symfonium is running here on a Fire HD 10 Plus, Fire OS 188.8.131.52, 1920x1200 px.
In landscape mode, the volume can only be adjusted via the hardware keys (or via voice commands).
Onscreen volume control in landscape mode