NAS & WMA - No Longer Working

You’ve rebooted the router, and the NAS. Have you rebooted (power cycled, not factory reset) your Sonos speakers, too? 

It wouldn’t be an change in SMB versions (although NAS companies are known to change settings in updates without warning), or you wouldn’t be able to run an update of the library, it would give you an immediate error. 

Given the list of speakers, I’m assuming you’re running S2, which means SMB v2 or higher. Which version of Western Digital’s NAS are you running? They recently stopped supporting some versions, including my NAS, with any software/firmware updates. 

I would recommend that you submit a system diagnostic within 10 minutes of reproducing the issue, and call Sonos Support to discuss it. Don’t post the resulting diagnostic number here.

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.

Ummm, a couple of ‘edits’ to my response:

Is this just WMA files, and not other files? You seem to state FLAC files work fine. That would point to another issue, IMHO, and not a communication with the NAS directly. 

I think my recommendations stay the same, though. A power cycle of the speakers first. It might be worth double checking for firmware/software updates in the controller, but submitting that diagnostic and calling in might still be the most helpful. I’d get past the Chatbot, and speak with a human, though. 
 

It might be worth a try of copying a couple of these ‘questionable’ WMA files to a non-NAS location, and set that location as an additional library. Then test there. If it is a communication issue with the NAS in any way, they should play fine. If it is an issue in Sonos’ playback software, they’ll be the odd response you’ve seen before. I haven’t noticed this on my WD MyCloud, but then I don’t look once I’ve started playback, and am not paying attention, other than listening, but I haven’t noticed any breaks in the music, either. I’m not aware of how many, if any, WMA files I have, though. 

Are the WMA files compressed? If not, there could be a network issue limiting bandwidth to the NAS. The compressed FLAC files could sneak through while the larger uncompressed files are ever a threshold.