Re Sonos speakers, my experience suggests that first, WiFi upgrade, make sure all music compressed, Scan Disc, DLNA off, NAS off, Sonos App not open, Speakers previously paired and do not require redo, select music, on B2, wait until selection seen under Title, top L on Web UI, then play button. Works repeatedly. So far Sonos has not jumped in, like after music played for hour or so, Sonos volume and pause took over. Needed to open Sonos to stop music. Maybe that will not happen with the above settings. My music did not play with all the above except NAS ON. Still great move by Brennan to bypass the transfer of Music Folder to Sonos App, like before Dec update. Ken