I am an Apple user and I would love to be able to use Airplay and an external disc drive connected to my iMac to play music DVDs through my Sonos One. That would be an extremely powerful and useful addition to Sonos functionality. (Note that uploading the songs from one’s CD collection in order to play them on the Sonos is NOT a good workaround…..)
Alternatively, Sonos should partner with a few peripheral manufacturers to develop a proprietary "service" -- similar to Spotify Connect -- which would enable at least their devices (eg, disc players) to use the Sonos One as an output when connected to an Apple computer.