don't send player steps in the editor when autoplay is on

stepmania/src/ScreenEdit.cpp

@@ -1052,6 +1052,7 @@ void ScreenEdit::InputPlay( const DeviceInput& DeviceI, const InputEventType typ
 	switch( StyleI.player )
 	{
 		case PLAYER_1:	
+			if( !PREFSMAN->m_bAutoPlay )
 				m_Player.Step( StyleI.col ); 
 			return;
 	}