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Using my Mac Book with Catalina I have no problem; however, on the iMac which uses Big Sur, Sonos cannot play half of the songs in the Musiclibrary (which contains exactly the same songs on the two computers. Any suggestions?

Permissions issue on my M1 MacBook Pro on Big Sur 11.5. Fix:

  1. System Preferences > Security & Privacy > Privacy
  2. scroll down until you see “Full Disk Access” on the left. Click.
  3. Click the lock to Make changes (bottom left)
  4. Click on “+” to add an app
  5. Browse to Applications/Sonos.app and add it
  6. Browse to “/Library/Application Support/Sonos/SonosLibraryServer” and add it
  7. Click the lock again
  8. Restart your Sonos App
  9. Try accessing and indexing your music library now. Hopefully it works!

Sonos: Highly recommend adding the above set of steps explicitly to your Mac/Big Sur installation instructions.


Maybe see if the answers in this earlier thread assist you…