True, the majority of religious Jews do not pronounce this name, but kabbalists and others Jews certainly engage this name in a number of ways. Most simply, you can pronounce and meditate upon the sound of each letter: Yud, Heh, Vav, Heh. Many kabbalists write the letters in Hebrew, vertically or in another form, gazing upon the shape of the letters, and using this as a way into transcendence and connection. Judaism not only provides meditation techniques that depart from cerebral concepts, but it also offers techniques that engage our sense of sight and sound, touch, even smell and taste. Experiment and discover your path to God.