Sonos and Mac OS X Lion
by Volker Weber
Sonos support writes:
The new Mac OS X 10.7 (Lion) release is not compatible with your current Sonos system if your Music Library is stored on your Mac. We will have an update to your Sonos Desktop Controller for Mac very soon and will notify you when it is available. In the meantime, please stay with your current version of OS X.
Repeat after me: don't upgrade your operating system in the first week after it became available.