This is the first time that this has occured but on my iPhone when I trried to play music from a Spotify playlist on Sonos, no playlists were shown. So I removed to application from Sonos and tried to re-add it. However after selecting the 'I already have an account' option for logging into Spotify on Sonos, the following came up 'Error. There was a problem authorising the account. Please check your internet and if the probem persists, please contact Spotify for help with your account. Press 'Back' to try again or 'Done' to continue.' My internet is working fine and I clicked 'Back' and 'Done' but the same error kept coming up. The SPotify account works fine offline and online on all devices but just not with Sonos.