When Banshee first starts the seek bar is set to zero, and is disabled, after arrowing right a few times, focus lands on the volume item, pressing any arrow key when the volume item is in focus will invoke the volume control, the only way of returning to other toolbar items is to focus out and back into the toolbar. When a song is paused or playing, and the seek bar holds a value, it will grab focus, and won't let you right arrow to the volume item. Unlike the volume control, when focus is stuck on the seek bar, the arrow keys don't do anything useful like seeking, neither does page up/down help.