                 context:SoundLoaderContext = new SoundLoaderContext(bufferTime, true);
 
             this.url = url;
-            setState(S_PREBUFFER)
+            setState(S_PREBUFFER);
             s.load(req, context);
         }
 

                sc.addEventListener(Event.SOUND_COMPLETE, onPlayComplete);
                setState(S_PLAYING);

                playerTimer = new Timer(TIMER_INTERVAL)
                playerTimer.addEventListener(TimerEvent.TIMER, onPlayTimer);
                playerTimer.start();
            }

            // 保证length和positionPct赋值正确。
            onPlayTimer();
            stop();
            setState(S_END);
        }

        private function onPlayTimer(e:TimerEvent = null) {
