Remaining open, to allow for the possibilities, to achieve greater understanding and knowledge, to provide the most advantageous path for those who look up to you, all these and more are how we "hear or listen" in all directions.
Directions does not remain restricted to the obvious but take us into the more metaphysical realm of truth, knowledge and understanding. It is not literally the ability to hear noises but to hear the sounds that knowledge and truth bring to the spirit creating greater moral and spiritual value. Often it is more important for the individual to "listen" to their inner voices, their consciousness, that which is connected to the Tao or the great Tai Chi.
Actively listen, really hear the voices both internal and external. The truth is out there!