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Question

Music Library on router USB drive

  • January 28, 2026
  • 27 replies
  • 120 views

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27 replies

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  • Prodigy III
  • January 29, 2026

I’m inclined to agree that I don’t think there’s a specific speaker assigned for indexing. If I were to guess I say it’s a speaker with the strongest WiFi signal at a given time or maybe one that’s wired.

The first speaker in my ‘about system” is an Era 100 in my garage. I doubt that it is the assigned speaker as there is a much closer Arc Ultra and/or Five to my router. Besides the speakers are listed in alphabetical order by room name. FYI, the speakers in my garage are named “Carport” all other rooms are in descending order of the alphabet (A-Z).

One more point...my stereo pair of Era 300’s have no problem playing music via my library (as the source).

Look on the desktop app, it will tell you which is the associated product. The order of the products appears the same, but the AP is not guaranteed to be the first product listed. In my system it is not. 

I’ve looked at the Desktop App under “Manage > Music Library Settings and there is no indication of a specific speaker assigned for indexing. FYI, I use macOS Tahoe 26.2.

However, as I said...At the end of the day I’m not overly concerned about how the indexing is performed...at least not until it doesn’t 😂

It’s not there… it’s in the ‘Sonos’ menu by the Apple top left, under About My Sonos System … 

Have a quick browse on your Mac App by album… I’d be interested to know if you have duplicates showing… many do at the moment.


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  • Prodigy III
  • January 29, 2026

OK, going to backtrack slightly… 😊

The associated product is for that session with an individual controller. So your phone could pick up a different speaker to go through for all its interactions than your desktop, tablet or laptop. Just tested starting the Sonos Mac app on a Macbook elsewhere in the house and it picked a different AP to the iMac. In fact if I repeatedly restart it, it picks up different APs… would have saved me a lot of time reboot stuff…!! 

However, it’s that associated product that will perform the indexing on your behalf for that controller while the controller is active. That is not to say that the controller holds the index, it does not. 

And different controllers connected to different speakers do not show different library results either which certainly in my system they would do if each individual speaker was maintaining its own index independently. So only one speaker indexes and propagates the results with the other speakers in the system.