private long microTime() {
        return (long)(System.nanoTime() / 1000 * mSpeed);
    }
Sets the playback speed. Can be used for fast forward and slow motion.
speed 0.5 = half speed / slow motion
speed 2.0 = double speed / fast forward
@param speed
MediaPlayer/src/main/java/net/protyposis/android/mediaplayer/TimeBase.java