To add to what James said above, things are slightly different between SmartThings and Hubitat.
-
The SmartThings Sonos integration reports the data on the
audioTrackData
attribute and usually includes direct album art URLs for sources like Spotify. Otherwise if artwork is unavailable, the tile searches for artwork based on the reported album and artist name. -
The Hubitat Sonos integration reports the data on the
trackData
attribute and does not include a direct URL to the album art URLs, so the tile does a search for matching album art based on the reported album and artist name.
For sources like Spotify, the reported album and artist are usually pretty good and results in matching artwork for common songs. Unfortunately radio providers are a mixed-bag oftentimes not reporting the album or artist at all or sometimes reporting quirky information (like reporting the radio DJ as the artist).