I’m able to create different tabs within a player but how do you assign a beat to a particular tab. If I want all of my beats on sale in one tab and all my higher priced beats in another.
You can do this using playlists. e.g. create a playlist with your discounted beats, then create a tab and set it display only that playlist. Then do the same for any other categories of beats
You can find some guides to help you below:
Creating a playlist: How do I create a collection?
Using tabs: What Are Store Tabs, and How Do I Use Them?