How to favorite tracks on Android
Step 1: Open Napster application
Step 2: Select the album/track and play, click on Heart Icon or (click on three dots and select Add to My Music) to add music to favorites.
Step 3: For each track, just click on the track and then the heart. All starred tracks that has an Heart symbol highlighted in blue will appear under My Music > Favorites.
To Remove tracks from favorites, Go to My Music > Favorites
Select the track from favorites, click on three dots next to the track
Select " Remove from favorites tracks" to remove the track from the favorites or just deselect the Heart to remove it from the favorites list.