音频播放完毕之后，重新播放就会发生异常

[AIM54]

java.lang.IllegalStateException at android.media.MediaPlayer._setDataSource(Native Method) at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1173) at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1156) at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1110) at android.media.MediaPlayer.setDataSource(MediaPlayer.java:1059) at com.myway.child.util.audiomanager.AudioPlayerManager.start(AudioPlayerManager.java:168) at com.myway.child.util.audiomanager.AudioPlayerManager.start(AudioPlayerManager.java:91)