Refreshing playlists/sources for media_player

I have had my Sonos speakers for a while and use the HA integration to play different sources. However, these sources never seem to change, they have remained the same for months. I have some very old Spotify playlists in there. I would like to add in my latest Spotify playlists and remove the ones I no longer want but can’t find out how you do this. Anyone help? Thanks