I'm also on android, sonos s2 latest version 80.11.33.
No album art at all since the new app (it displayed fine on the old brown icon app).
What's worse is that sonos support (chat) tells me that album art IS supported on android and to re-imbed the album art. I have followed those sonos instructions perfectly and still no album art.
The exact same music library (network folder with my music) albumart does display perfectly in Bluesound, BubbleUPnP, mConnect lite, and other android music apps, and also displays fine in the sonos windows app.
Sonos support is claiming that albumart IS supported on android. I believe otherwise.

The same here, every Android app on my phone displays album art perfectly, as do windows apps and even the headunit in my car, only in Sonos are they missing.  It is surprisingly disappointing as I tend to rely on the images rather than text to locate music.  Do you happen to know if a previous version would likely work and if so how to roll-back? 

Album art for local libraries has been broken since the release of the new app in May, on Android only.

https://github.com/amp64/sonosbugtracker/issues/28

There seems to be zero interest in Sonos fixing this, I can only assume the necessary http-override is not possible in the framework the Android app uses.

It was only added to the official Trello board 3 days ago and is listed as “Coming Soon”.

From Nick Millington’s October Office Hours answer in Reddit:

”As another example which we haven’t talked about before, the reason why album art for local music libraries doesn’t work on Android is because we’re now using the built-in Android HTTP client, and its behavior (enforced at a very low level) is to block connection to non-SSL resources, and the Sonos players don’t serve album art for songs in a local library over SSL yet.”

See the second to last answered question.

https://www.reddit.com/r/sonos/comments/1gfuok4/comment/lurr6on/?utm_source=share&utm_medium=mweb3x&utm_name=mweb3xcss&utm_term=1&utm_content=share_button

I was wondering whether these explanations also apply to the missing album art & alarm control on android lock screen ?

Prior to ‘the new app’ when an alarm played on my Roam speaker (playing a spotify playlist), on the lock screen album art was displayed (I think with song title & artist) AND there were controls to control the alarm (eg silence it).

This is the exact reason I listed months ago, my question is why Sonos still haven’t figured out how to get around this Android limitation. It took me about four hours to fix this in my Android experimentation, Sonos are about to hit the six month period for not figuring it out.

ANDROID devices Album Art:

Guess i will have to stop recommending SONOS products to my fellow android friends.

I could see the album art before this horrific upgrade and have been waiting, like others, for the fix to come out…

I think I have given enough time for SONOS to get it together.  It’s a shame, the app worked so well before. I had people over that took pictures of the screen of my tablet in my game room when they heard a song they liked. But without the album art I’m somewhat embarrassed about it.

NOT a good thing, SONOS.

Okay. So I have read through pages of comments and complaints. Seems like I am having the same problem as everyone else, album art has not showing up on my android device since the new software was released. To be clear, is anyone able to get the artwork to show up?  Did I miss the "fix" as I was reading all of the comments?

I don’t think you have missed any updates, Mike. They are done automatically, and I have been keeping track of them since this Android app fiasco began.

I gave a friend permission to try it on his iPhone at my home and it worked fine on his phone, displayed all the album art in my library. But my Android phone and tablet are still not displaying any of my library artwork.

The desktop app works fine won my Windows 11 workstation. But that does not help me or others like me using Android devices.

Seems SONOS has made iPhone it’s priority.

I truly thought, in the beginning, that SONOS software engineers were smarter than the now seem to be.

I will be exploring other options for my game room music upgrade. My SONOS speaker will be relegated to a shelf in my dusty garage soon...

You can track some issues on the Sonos / Trello, the Library artwork for Android is mentioned.

https://trello.com/b/4T9rbg8t/sonos-app-improvement-bug-tracker

I see the issue listed on the tracker board under the heading “coming soon”.  They are obviously aware of the issue, so unfortunately waiting to see how quickly (if ever) the problem is resolved is all we can do at this time.  I am not going to sell my current system, but I certainly am not adding any new hardware to it and I have stopped recommending Sonos to others.  

I  don’t think that is the case.  I have iPhone and iPad, both with the lates update from 15 November and I can’t eeven access my Music Library from either.  Windoew app sees it perfectly and the mobile devices can even initiate a re-scan and when I watch the NAS connections I can see the devcices accessing the tracks.  Ic an even control music which was selected using the Windows app,  But on the mobile devices the “Your Sources” option steadfastly refuses to show me the Music Library