I think Bushwacked has hit the nail on the head, it is all about the interface that is accessing the NAS, if it’s clunky difficult to use, you won’t.
Bushwacked, the Pi can be as good as you want it, HDMI is digital sound, 3.5mm Jack is terrible. Unlike Sonos Play, with a Pi you can add a USB or I2C soundcard or use the HDMI to transmit it digitally to an amp, it will play 24bit files, FLAC’s, Lossless, etc. But the Sonos interface is very slick, although not as fast as LMS.
I’m using 4x Raspberry Pi’s, (1x HDMI Audio 24bit, 3x I2C HiFiBerry 24bit Soundcards), with LMS Server on HP Microserver. Synced music around the house. – Poor Mans Sonos that sounds better if you have decent equipment. :wink: