To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyses reviews to verify trustworthiness.
This thing is not user friendly WHAT SO EVER! I have a Mac and have all my music in the right format and I can not add any music to it. I have been googleing and watching YouTube videos for two hours. Spend the extra money this thing is a waste of money