I have large playlists of tracks stored on a NAS. While SONOS is playing my imported playlists well, I am not able to resume playing after I have selected another source and SONOS restarts playing the list from the beginning. I have noticed that this is a feature many of other owners would welcome. However, all related posts have been closed for comments. Hopefully this is a sign that the SONOS engineers have got the message and very soon will satisfy its customers by offering a sustainable solution. I keep my fingers crossed.