I have a problem with my new Sonos Connect device. When I try to choose it in the VOX app for OSX, it is not always visible. It seems that it somehow conflicts with another Sonos device I have (Sonos Play:5). I never saw both of them selectable in the list at the same time. Once selected and connected, playback works without any problems.
All other apps (Sonos Own and Spotify) can see both devices at the same time and work fine.