Apple has made a change to iOS that breaks the ability for Sonos to play "from this device". May I suggest that you read the main thread on this, particularly the first post, which offers, and discusses many options, ranging from free to not?

After reading that, you have a One and so you can use Airplay. 

Thank you for the reply. I read this thread and decided to transfer my Apple Music playlists to Spotify, then access them on Spotify for Sonos play. The instructions for transferring to Spotify states:

Select Apple Music playlists you want to move (by checking the corresponding box in left of each playlist)

Unfortunately there are not boxes to the left of the playlists. Can you help me locate instructions for transferring Apple Music playlists to Spotify?  Thanks.