com.sonos.SonosLibraryServer

SonosLibraryServer is a helper component bundled within the Sonos desktop app for Mac, not a separate application — it cannot be updated independently. The Sonos desktop app itself remains Intel-only and Sonos has publicly confirmed they do not plan to ship a native Apple Silicon build for the macOS desktop controller. This means SonosLibraryServer will stop working when Apple removes Rosetta 2 in macOS 28 (September 2028). Your best option now is to transition to the Sonos web controller at home.sonos.com, which runs natively in any modern browser on Apple Silicon and provides the same core control functions (playing music, adjusting volume, managing zones). If storing and streaming music from your Mac is essential, note that the web interface has fewer local-library features than the old desktop app, so you may want to verify it meets your needs before September 2028. There is a third-party native macOS Sonos app called Phonos on the Mac App Store that some users have adopted as a partial replacement, though it is not an official Sonos product and has limited feature parity with the desktop app.