if we could not determine the start time, and it is not specified as

 a parameter, then use 0

src/com/fluendo/player/Status.java

@@ -424,7 +424,7 @@ public class Status extends Component implements MouseListener,
     }
 
     public void setStartTime(double seconds) {
-        startTime = seconds;
+        startTime = seconds >= 0 ? seconds : 0;
         component.repaint();
     }