By clicking a note head or pressing enter I get to edit mode (note head changes to orange color). Now I can change the pitch (U / D cursor keys w/modifiers) or step the successive notes (L / R cursor keys) and hear them play while stepping.
Is it possible to "step play" all the voices? That would be extremely handy while tidying up the arrangement..
Another question at the same price: is it possible to store the default zoom, ie. no need to CTRL + '+' after opening a score.