The ASIN stands for Amazon Standard Item Number. When you schedule or edit an episode, you'll have the option to include up to 3 Amazon Book Covers or Products to rotate in your Episode Description. You simply enter the book or product that you want to search, select "Find ASIN," then choose the product that you want to display, and follow the on screen prompts to finalize it. You can do this up to 3 times per show you schedule