MacVoices #20199: Kirk McElhearn on Apple Music, Backing Up To A NAS, And More (2) Our conversation with Kirk McElhearn continues with why backing up to a Network Attached Storage (NAS) device is a bit different that some other options, which drives to buy for your NAS, and cat photos. We also return to the Apple Music question with an examination of what’s next for all the music services, and how the answer to The Marshmallow Test may determine the role podcasts will play.