The Ram Gita begins on page 652 of above linked edition. Here is more from editor's Preface:
It is said that Adhyatma Ramayan was first narrated by lord Ram to Shiva (Baal Kand, canto 2, verse 4), then by Lord Shiva to Parvati (Baal Kand, canto 1, verse nos. 7, 16-17), subsequently by Lord Brahma to sage Narad (prologue/Mahatamya, verse nos. 16-17; 60) and the transcript of this latter conversation detailing verbatim the former (prologue, verse no. 28) was done by sage Veda Vyas, the legendary classifier of the Vedas and author of Upanishads, Purans, Mahabharat etc. in the ‘Uttar Kand of his Brahmand Puran’.
Being the product of such a prodigy of stupendous genius and matchless intellect who was also an enlightened soul, it is to be expected that Adhyatma Ramayan contains the essence of the highest of pristine philosophy, spiritualism and metaphysical concepts, well narrated in simple, lucid, vibrant and accessible language, and woven intricately in the main texture of the fabric consisting of the divine story of Sri Ram.
Adhyatma Ramayan is a unique blend of the worldly story of Sri Ram as the most truthful, upright, valiant, valorous, righteous, noble and wise son of king Dasrath of Ayodhya vis-a-vis his spiritual, divine, enlightened, sublime and holy form as the supreme Brahm himself. As the latter, he is praised, honoured, lauded, adored and worshipped by the Gods, sages, seers, saints and other exalted ones as having all the characteristic attributes (or, the lack of them, as it were) of supreme Brahm. The divine epic seamlessly blends the divine with the mundane, the metaphysics with the humdrum terrestrial existence, the concept of adoration, devotion and worship with high intellectual ponderings, contemplations and spiritual debates, and it thereby unifies the creature with its ultimate truthful form or nature as the supreme Brahm.
The reading of this tome lifts the reader from this mundane, humdrum existence into the higher realm of spiritualism marked by detachment, renunciation, self restraint, peace and tranquility of the mind and soul, the realisation that this world is an illusion and the fact that the supreme, unadultared reality and truth is quite different from what we generally know or understand it to be. It kindles wisdom, self realisation and enlightenment in the heart of the true seeker. It removes darkness of ignorance and stupidity, and lights the beacon of true knowledge, wisdom and enlightenment. It is not a simple, often re-told story of Sri Ram, but a torch-light or an eye opener, as it were, in to the wisdom of the higher world of spiritualism, devotion, self realisation and enlightenment. In this aspect, sage Veda Vyas did earlier what Tulsidas did later on.
If Adhyatma Ramayan kindles love and affection for the Lord, if it kindles a sense of self-realisation, wisdom and enlightenment in even one soul, my efforts would be deemed to be fruitful and rewarded. Because one candle lit can light more candles. I have no doubt that this beacon of spiritual light would shine day and night atop the lighthouse of truthful knowledge and devotion to guide the ships of our mundane, humdrum lives that is caught in the rough and tumble of the ferocious, merciless, buffeting ocean-like entrapping, artificial and delusionary world, in its journey towards self realisation, emancipation and ultimate salvation—a journey inwards rather than outwards; a journey that could wreck the whole ship had it not been for the beacon of this lighthouse called Adhyatma Ramayan containing the divine story Lord Ram, the Supreme Brahm! Amen!