Cannot Play Some Tracks, Error "Not Encoded Correctly"

I have the same issue with spotify and Sonos using the mac app.

Diagnostic Report 4067625 

Hello Jason,

Audio issues could be due to interference or wireless setting conflicts.  I am seeing the error messages you mentioned above in the diagnostic in regards to your music library located on your NAS. Are you experiencing it with a any other service as well? Have you tried multiple services and stations to see if you experience the same problems?  

Here are a few things to try to help narrow the cause of these errors:

Take a look at this link, it has possible causes and potential solutions to help with audio and interference issues. Your Sonos system is currently on channel 6, ensure that your router is set to channel 1 or 11. Please also ensure that it is not 'Auto-channeling' which means that it will periodically change channels and could cause conflict with the Sonos system. 

After you check these settings, please test the system again and grab another diagnostic and I'll be happy to take a look. 

Sorry about the delay in replying, only just got around to looking into this.  I have changed my router channel to 11 and also re-encoded and re-imported the music that will not play, but neither option has worked.  I have therefore submitted another diagnostic - 4087435.  Thanks in advance

Sorry about the delay in replying, only just got around to looking into this.  I have changed my router channel to 11 and also re-encoded and re-imported the music that will not play, but neither option has worked.  I have therefore submitted another diagnostic - 4087435.  Thanks in advance
Hello Jason,

I'm still seeing the error messages in regards to your NAS music library. 

Since we're only experiencing issues with this device, let's try a few steps to get the music streaming properly:
- Try plugging the NAS device into one of the Sonos devices. 
- Replace the ethernet cable that goes between your NAS and the router or Sonos device. 

Please test again and then submit a diagnostic, we can take another look.

Hi Dominique, I have plugged my NAS into the back of my Sonos Bridge with a different cable and tried to play the same tracks again, and received the same error. Diagnostic 4089371 refers. FYI - the particular tracks at fault are ALAC encoded, converted from FLAC. Other music I have played is encoded in the same way, as is a lot of music I have ripped from CD into the ALAC format. I was going to try encoding to a different format - probably m4a to see if this helps. Regards, Jason

Hi Dominique, I have plugged my NAS into the back of my Sonos Bridge with a different cable and tried to play the same tracks again, and received the same error. Diagnostic 4089371 refers. FYI - the particular tracks at fault are ALAC encoded, converted from FLAC. Other music I have played is encoded in the same way, as is a lot of music I have ripped from CD into the ALAC format. I was going to try encoding to a different format - probably m4a to see if this helps. Regards, Jason
Thanks for the added info Jason. I would definitely recommend trying to convert the track and testing again as well.

Can you also verify that you are able to play the track on your computer(this will let us know again if there is an issue with the tracks themselves or just particular to Sonos)? 

We look forward to hearing back from you. 

Hi Dominique, I have plugged my NAS into the back of my Sonos Bridge with a different cable and tried to play the same tracks again, and received the same error. Diagnostic 4089371 refers. FYI - the particular tracks at fault are ALAC encoded, converted from FLAC. Other music I have played is encoded in the same way, as is a lot of music I have ripped from CD into the ALAC format. I was going to try encoding to a different format - probably m4a to see if this helps. Regards, Jason
Dominique,

I have confirmed that the ALAC tracks were playable on my computer, but have re-encoded them as AAC and rescanned my music library.  As a result I am now able to play all of the music through my Sonos as required.

I'll do some further investigation into the latency issues that seem to be causing the problem. but for now I would say this case can be closed.

Many thanks for all of your help - much appreciated.

Jason

I am listening to Deezer Elite via my Sonos Connect which sends music to my DAC/amp for my headphone setup.  This problem began presenting itself this evening....several songs in a row.  No change in my WiFi setup (using Uverse and transmitting WiFi via an Apple Time Capsule.  Sonos located within 10 paces of the Time Capsule.  Has been working great for months and now this problem.  What a disappointment.

I am listening to Deezer Elite via my Sonos Connect which sends music to my DAC/amp for my headphone setup.  This problem began presenting itself this evening....several songs in a row.  No change in my WiFi setup (using Uverse and transmitting WiFi via an Apple Time Capsule.  Sonos located within 10 paces of the Time Capsule.  Has been working great for months and now this problem.  What a disappointment.
I have the same problem with Deezer Elite on my Sonos system with any zone player.  Sounds like a bug somewhere.

I am listening to Deezer Elite via my Sonos Connect which sends music to my DAC/amp for my headphone setup.  
It is odd since it is an intermittent problem.  I had it really bad one evening, it disappeared, and now rears its head occasionally.  Fortunately, it has been semi-stable of late.