Repetitive listening is a powerful way to get used to a new language. How often should we listen to the same content?
The key is to do what you want to do. There are two principles at work.
1) Repetition: Repetition helps to create new neural networks in the brain.
2) Novelty: The brain likes new things. Once you are bored, you stop noticing and you stop learning.
You have to find your own balance between repetition and novelty. Some content is interesting, or you like the voice and you can listen many times. Some content you do not want to listen to again. Keep the interest level up, and choose when to repeat and when to move on.
It is your own personal journey.
