Android – Show play timing, remaining time of play

I use the following code to play the recorded audio file, it works fine. I have a seekbar which shows the progress of the play. I have two static text called start and end. I need to show the duration of the play (00.00 to max duration) in the start text and decrement the time from max duration to 00.00. I need to show the progressing time, remaining time… Any suggestion..

private void playAudio() {
        // TODO Auto-generated method stub
        start.setVisibility(View.VISIBLE);
        end.setVisibility(View.VISIBLE);
        Context context = getApplicationContext();
        CharSequence text1 = "Your audio will play";
        int duration = Toast.LENGTH_SHORT;
        Toast toast1 = Toast.makeText(context, text1, duration);
        toast1.setGravity(Gravity.CENTER_VERTICAL, 0, 0);
        toast1.show();


    String newFolderName = "/ComAudioRecorder";
    String extstoredir = Environment.getExternalStorageDirectory()
            .toString();
    String filename = "/combinedrecaudio.wav";
    String path1 = extstoredir + newFolderName + filename;
    Log.d("path1", path1);
    /*
     * String path=path2; Log.d("path",path);
     */
     mPlayer = new MediaPlayer();
    try {
        mPlayer.setDataSource(path1);
        mPlayer.prepare();          
        mPlayer.start();
    } catch (IllegalArgumentException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IllegalStateException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
    mSeekBar.setMax(mPlayer.getDuration());
    new Thread(new Runnable() {

        @Override
        public void run() {
            // TODO Auto-generated method stub
            while (mPlayer != null
                    && mPlayer.getCurrentPosition() < mPlayer.getDuration()) {
                Log.d("Indide Run Method",Integer.toString(mPlayer.getCurrentPosition()));
                try {
                    Thread.sleep(100);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                mSeekBar.setProgress(mPlayer.getCurrentPosition());
      start.setText(Long.toString(startTime));              
                //end.setText(Double.toString());
            }           
        }

    }).start();
     pos=mPlayer.getCurrentPosition();
    mSeekBar.setProgress(mPlayer.getCurrentPosition());
    // mPlay.setVisibility(View.INVISIBLE);
    pauseRecord.setVisibility(View.INVISIBLE);
    resumeRec.setVisibility(View.VISIBLE);
    /*start.setText(Double.toString(starttext));
    starttext=starttext+00.01;*/
    // start.setText((int) (mPlayer.getCurrentPosition()/100000.0));
    // end.setText(currentTime);

    // start.setText();
    // mDelete.setVisibility(View.INVISIBLE);

}