It seems that another way for users to view and manage their saved Albums and Playlists would be in the ‘My Account’ section of the web app.
The phone app stores this data, so it can’t be difficult for Sonos to upload and publish the lists in a personal Profile section titled ‘My Sonos’. Then using the web app interface, a user could edit/delete/export the album/song listings - but not add to it.
It would be ideal to review the albums & songs on these lists, check for duplicates or simply to edit them.
Does this sound like a useful idea?