Question: Is meditation the only way to Enlightenment?
Yes. Meditation means your "attention to". The mind needs to get concentrated then it becomes introverted. Repetition of the Divine names, concentration on a particular form and similar practices are all preliminary exercises in preparation for meditation as they help the mind to become single-pointed. Please do not misunderstand Me, I am not saying that the meditation I teach is the only effective method, no. Terminology differs from Guru to Guru. For example, Ramana Maharshi taught "Self-Inquiry" by the process of asking "Who am I?" He taught that one should observe from where the consciousness of Self comes from - which is meditation.