"My Favorites" across players

I have saved favorites on the player that I use most but would like the same My Favorites lists (albums, artists, songs) across all my players. Related to this I have 2 questions:

a) Is there a way to send my favorites from one player to other players?

b) When I add favorites in the future, how do I add these to all my players at the same time?

I have the same questions about presets too.

It seems that My Playlists are shared across my players automatically, but this hasn't been the case for My Favorites or My Presets.