You can add any audio in the Empower You Unlimited Audio app to your Library within the app for listening to later.
Simply tap the heart icon on any details screen or player screen to add the audio to your Library.
When you tap the icon, it will turn pink to show that you have successfully added it to your Library.
These audios will show up in the Favorites section of your Library:
To remove something from your Favorites, tap the heart icon again so that it turns back to white.