It seems as though Apple music playlists are no longer appearing in Sonos when indexing the library.
After many hours of chat with Apple / Sonos it appears the reason is that Apple no longer generate the XML file required by Sonos to index the Library. It is unclear as to whether this is a result of my recent Monterey upgrade or not.
The “iTunes Music Library.XML” ( you must have the spaces !! ) file can however be exported by Music / saved to your Sonos library index location and all should be fine, (although you’ll need to do this every time you change a playlist ) but importantly for us all is that Sonos clearly know this restriction to their offering but are not making to clear to all. Unless a fix is provided by Sonos, or you have the capability to generate XML files (many people will not), the Sonos APP is now in my view seriously compromised. It was bad enough when we lost the ability to play direct form our phones, but this is now even worse. I fear 3rd party APPs like Sonos are being squeezed out by APPLE with a view to them controlling all access to playlists generated on their APP...the thin end of the wedge.
I for one will not be upgrading / adding any more Sonos products until the way forward is clear .
Happy to be corrected / updated on any of the above if i’ve missed anything