public int audioTrackInit() {
//      Log.e("  ffff mediaplayer audiotrackinit start .  sampleRateInHz:=" + sampleRateInHz + " channels:=" + channels );
        audioTrackRelease();
        int channelConfig = channels >= 2 ? AudioFormat.CHANNEL_OUT_STEREO : AudioFormat.CHANNEL_OUT_MONO;
        try {