can rewind now

assignments/a2/src/main/java/Controls.java

@@ -23,7 +23,7 @@ public class Controls extends JPanel implements Observer
     {
       public void stateChanged(ChangeEvent e)
       {
-        if (!playback.getSettingLen() && playback.getValue() != model.getThingies().size())
+        if (!playback.getSettingLen() && playback.getValue() != model.getTotalVisibleLen())
         {
           model.changeThingy(playback.getValue());
         }