JavaSound - playback

public void testPlay() {
        try {

            File file = new File(filename);
            AudioInputStream in = AudioSystem.getAudioInputStream(file);
            AudioInputStream din = null;
            AudioFormat baseFormat = in.getFormat();

            System.out.println(baseFormat.toString());

            AudioFormat decodedFormat = new AudioFormat(
                    AudioFormat.Encoding.PCM_SIGNED,
                    baseFormat.getSampleRate(),
                    16,
                    baseFormat.getChannels(),
                    baseFormat.getChannels() * 2,
                    baseFormat.getSampleRate(),
                    false);
            din = AudioSystem.getAudioInputStream(decodedFormat, in);
            // Play now.
            rawplay(decodedFormat, din);
            in.close();
        } catch (Exception e) {
            //Handle exception.
            System.err.println(e.getMessage());
        }
    }

    private void rawplay(
            AudioFormat targetFormat,
            AudioInputStream din)
            throws IOException, LineUnavailableException {

        
        
        int nInternalBufferSize = AudioSystem.NOT_SPECIFIED;
        
        
        
        SourceDataLine line;
        //line = getSourceDataLine("Alto-falantes (Dispositivo de High Definition Audio)", targetFormat, nInternalBufferSize);
        
        line = getSourceDataLine("Java Sound Audio Engine", targetFormat, nInternalBufferSize);
        
        // Padrão:
        //SourceDataLine line = getLine(targetFormat);

        o("line.getLineInfo()="+line.getLineInfo());

        line.getMicrosecondPosition();

        // http://download.oracle.com/javase/1.5.0/docs/guide/sound/programmer_guide/chapter4.html#113663
        int bytesToRead = (int) Math.pow(2, 14);
        bytesToRead = 64;

        byte[] data = new byte[bytesToRead];

        boolean lineStopped = false;

        Control[] controls = line.getControls();
        
        /*
        for (int i = 0; i < controls.length; i++) {
            o(i + "=" + controls[i].getType());
        }
         */

        FloatControl gainControl = (FloatControl) line.getControl(FloatControl.Type.MASTER_GAIN);
        FloatControl panControl = (FloatControl) line.getControl(FloatControl.Type.PAN);
        FloatControl balanceControl = (FloatControl) line.getControl(FloatControl.Type.BALANCE);




        if (line != null) {
            // Start
            line.start();
            int nBytesRead = 0;

            //din.skip(500000);

            while (nBytesRead != -1) {
                //while (total < totalToRead) {

                if (stopped) {
                    if (!lineStopped) {
                        line.stop();
                        //line.flush();
                        lineStopped = true;
                    }
                } else {
                    if (lineStopped) {
                        line.start();
                        lineStopped = false;
                    }

                    gainControl.setValue(gain);
                    panControl.setValue(pan);
                    //balanceControl.setValue(balance);

                    nBytesRead = din.read(data, 0, bytesToRead);
                    if (nBytesRead == -1) {
                        break;
                    }
                    //o(line.getMicrosecondPosition());
                    //o(balance);
                    //o("getLevel() = " + line.getLevel());
                    line.write(data, 0, nBytesRead);
                }
            }

            // Stop
            line.drain();
            line.stop();
            line.close();
            din.close();
            line = null;
            o("close line.");
        }
    }