Really liking something you found in Roon? Add it to your Favorites by clicking the heart icon
wherever you see it -- on an album screen, next to tracks, artist screens, works, composers, it's everywhere!
After you've favorited something, you can access it later by viewing in the corresponding library
(Artists, Albums, Tracks, Composers, or Compositions), and clicking the Favorites button. This icon actually has three states, which are stepped through by each click.
The "Banned" state means that the item to which it applies (e.g. a track, an album, or a work) will never be included in a queue created by the