According to the provided text from Chapter 45, how does Sai Baba's presence continue after the end of his physical incarnation?

Chapter 45 explains that while Sai Baba's physical form vanished when He brought His incarnation to an end, His presence continues through a new medium. The chapter posits that the Shri Sai Satcharitra itself has become His "literary form," which will provide remembrance for devotees at every step. As stated in the text from Chapter 45, the act of listening to these stories allows the mind to attain a unique and indescribable peace through deep concentration. This literary legacy ensures that His guidance and the experience of His presence are not lost.