I understand that Rhapsidy no longer works for M1001, neither Napster or Spotify does .....so which one does work with the Soundbridge ??
Via Jamcast you can get direct subscription access to Grooveshark, Spotify, Google Music... use the Virtual Soundcard channel for anything not directly supported. Use the Android app for a very Sonos-like experience with your M1001.
Even still today, the Soundbridge is one of the best streaming devices ever built. You can still get much use out of it using available UPnP/DLNA software like Jamcast. http://getjamcast.com