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参考：

建议下载一个铃声文件（小点的），然后用千千静听，转换成wav格式的。

源码如下：

public class Playmp3Activity extends Activity  {

private final String file="//sdcard//testring.wav"; private final static String tag="22"; static byte[] buffer=null; AudioTrack at=null; int pcmlen=0; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); try { FileInputStream fis=new FileInputStream(file); buffer=new byte[1024*1024*2];//2M int len=fis.read(buffer); Log.i(tag, "fis len="+len); Log.i(tag, "0:"+(char)buffer[0]); pcmlen=0; pcmlen+=buffer[0x2b]; pcmlen=pcmlen*256+buffer[0x2a]; pcmlen=pcmlen*256+buffer[0x29]; pcmlen=pcmlen*256+buffer[0x28]; int channel=buffer[0x17]; channel=channel*256+buffer[0x16]; int bits=buffer[0x23]; bits=bits*256+buffer[0x22]; Log.i(tag, "pcmlen="+pcmlen+",channel="+channel+",bits="+bits); at = new AudioTrack(AudioManager.STREAM_MUSIC, 44100,                    channel,                 AudioFormat.ENCODING_PCM_16BIT,                    pcmlen,                 AudioTrack.MODE_STATIC);   at.write(buffer, 0x2C, pcmlen); Log.i(tag, "write 1..."); at.play(); Log.i(tag, "play 1..."); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } }

@Override

protected void onDestroy() { // TODO Auto-generated method stub super.onDestroy(); at.release(); }    }

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