What is the Buddhist perspective on passively altering your subconcious?

Firstly I'd like to provide some context: When I first began getting into the Buddhist teachings, specifically that of the Theravada tradition, I'd often do things such as passively play the Dhammapada in my earphones while riding my bike, or keep it on low volume in the background while I did something else. My goal was to be able to gain a basic grasp of the dhamma through forced repeated listening, and to an extent it worked in the sense that I memorized a lot of verses and ideas found in the Dhammapada, and upon hearing a verse quoted, I have an "aha" moment in the sense that It feels familiar. Furthermore, my mind and speaking style had a subtle change as well, with my head being fixated on "illusions" found in everyday physical existence. Overall, there was definitely a change in my physical being. In Buddhism, mindfulness is praised and shown as the key to making spiritual progress. While I did employ mindful practices such as watching my mind in everyday life and meditating every once in a while, the practice I used for the longest time was definitely not that of a mindful one. Yet, it seemed to have occurred to me that reaching a certain point in Buddhist practice, even through mindful meditation, requires a certain degree of destroying the old and replacing with the new, in the sense that old beliefs such as those cultivated through childhood can prevent one from going forward in their spiritual practice, or in that sense any practice, be it learning a skill or whatever (i.e saying to yourself constantly that "I'm this, I'm this kind of person/ I was made to do X"). Whether through the words of Buddha or through the teachings of other Buddhist practices such as those of a tantric origin, what is the Buddhist perspective on knowingly "brainwashing" or "rewiring" yourself via methods of repeated listening, binaural beats, and other various forms of hypnosis and subconcious alterations to make changes to your life and perspective on things?