I have a similar, perhaps the same, issue, that affects my most recent SONOS buy, a Move2. A typical scenario is that I listen to one of my Apple Music playlists, started from the SONOS app, and after some (apparently random) time, the Move2 suddenly go silent with no apparent reason. Looking at the SONOS app, the Move 2 is still playing, and I can adjust volume, select next song, whatever, it all appears to work, except that the Move2 remains completely silent. I’ve tried a ton of things without positive result. Searching the net I found the suggestion to disable Atmos in Apple Music, so I’m testing that now, but no high hopes. And suggestions are welcome. I should add that none of my other SONOS devices have this issue.

It appears that the issue with playing Apple Music through Sonos speakers (including the Era 300) has not been resolved in recent hardware and Sonos app updates for iOS:
"Friday, September 20, 2024 - 12:16 Sarajevo, Skopje, Warsaw, Zagreb
Unable to play "I Hope You Know" - the song was not encoded correctly."

This is how Apple Music via Sonos app works on Era 300 now:
Friday, September 20, 2024 - 12:16 Sarajevo, Skopje, Warsaw, Zagreb
“I Hope You Know” can’t be played - the song wasn’t encoded correctly.

Friday, September 20, 2024 - 18:37 Sarajevo, Skopje, Warsaw, Zagreb
Can’t connect to Sonos product.

Friday, September 20, 2024 - 18:44 Sarajevo, Skopje, Warsaw, Zagreb
Can’t play “On The Run” - the song wasn’t encoded correctly.

Friday, September 20, 2024 - 18:44 Sarajevo, Skopje, Warsaw, Zagreb
Can’t play “On The Run” - the song wasn’t encoded correctly.

Friday, September 20, 2024 - 18:44 Sarajevo, Skopje, Warsaw, Zagreb
Unable to play "On The Run" - the song was not encoded correctly.

It doesn't work on Sonopad either.

I’m having the same issue- I can get my Apple Music to play at all- it starts with a song and then cycles through the rest without playing. Sonos and Amazon radios seem to be working - but I have Apple Music!!

That sounds a lot like a DNS issue, between your system (Sonos speakers) and the Apple servers. I’d certainly try a network refresh, by unplugging all Sonos devices from power, then rebooting your router. Wait a couple of minutes before plugging back in your Sonos devices. They’ll pick up any new DNS data, along with new IP addresses from your router, and that should (might?) fix your issue.

If this doesn’t fix the issue, though, I would submit a system diagnostic within 10 minutes of experiencing this problem, and call Sonos Support to discuss it.

There may be information included in the diagnostic that will help Sonos pinpoint the issue and help you find a solution.

When you speak directly to the Support staff, they have tools at their disposal that will allow them to give you advice specific to your network and Sonos system.

I was always wondering about people having connectivity issues with Sonos,. you just go through initial setup , possibly with some glitches here & there and you are done for good right? Well.. now I can relate , as not being able to play one full song from Apple music library, not mentioning whole album is just not acceptable. To cut long story short - used to work solid , nowadays same issues as all other folks on the forum. Seems to start happening recently (suspecting recent updates of course:). Tried almost everything , once last chance is wifi extender that I am picking up tmrrw. But not really keeping my hopes up as router is in the same spot as ever before , so is my Sonos system.. and wifi in app states ‘strong signal’ all the time ,- even when song stops playing and player is all confused skipping the tracks or pretending to be playing something or just loading and ending up starting random track from the album (and then the whole torture repeats after a while).

Sonos helpdesk suggested this to be related to Apple Music - as in ‘it’s not us, it’s them’ ..but common , whichever side the issue is on, we as end customers of quite expensive audio setups don’t really care. Just get it fixed pls

I’m not sure if what I’m experiencing is the same as others, but ever since Sonos rolled out lossless playback from Apple Music I’m finding most lossless (and especially hi-res) skip through the songs - as in play a bit, skip a few seconds and play ok, then skips again, and so on. As there’s no way of rolling back to lossy audio you’re stuck with Apple Music basically not working. 
 

I’m on a 900mbps fibre internet connection, and this happens on all my Sonos gear wired and wireless. I’ve gone through the usual reboots with Sonos support and at one point they did acknowledge there was a problem with lossless playback on Apple Music that they’re aware of, but no suggestion of if and when it will be fixed ‍♂️

I had some similar problems with Apple Music back in August. Couple of things that cleared things up for me (aside from the usual firmware/app updates) were (a) check the SNRs on each Sonos device, anything less than 40dB caused problems with lossless playback, (b) move as many devices as are compatible to 5GHz and (c) make sure you’re not inadvertently running double NAT (I had done so by accident following a lightning storm taking out our Wifi and, while many things seemed to work OK, it was an absolute disaster for many devices including Sonos, basically DHCP chaos). Not had any issues with lossless Apple Music playback for well over a month now, in fact it’s worked flawlessly since beginning of September.

Thanks for the suggestions. 
 

I’m definitely not running double NAT. As far as I can tell, with my Arc on a wired connection all my other devices are connected to a Sonosnet rather than my WiFi, possibly because the Arc has a Sub gen 3 and two Era 300 surrounds “connected” as part of a home theatre setup. No idea if there’s anyway of getting out of that. 

But I get the skipping on the Arc as well even though that’s wired. 

I have exactly the same issue, it’s very annoying. It happens especially with some playlist, more than with others. I’ve restarted and updated all the parts (speakers, S2 app, iOS) but the problem is still there