def get_audio_length(length):
    """
    Get audio length from seconds to human easy readable format.
        hh:mm:ss --in case that is longer than a hour, otherwise-- mm:ss
    
    Arguments:
    :param length: integer -- audio length in seconds
    
    :return: string
    """
    minutes, seconds = divmod(length, 60)
    hours, minutes   = divmod(minutes, 60)
    if hours == 0:
        return "%02d:%02d" % (minutes, seconds)
    return "%02d:%02d:%02d" % (hours, minutes, seconds)