So we are getting ready to build a new house, and I'm thinking about audio distribution, because I'm a nerd. For these house we're in now (that we are moving out of), I intended to have whole-home audio distribution, so I spent a small fortune pulling wires for in-wall and in-ceiling speakers, and wall-mount volume controls - none of which ever got used. In-wall and in-ceiling speakers are expensive, and the control system seemed like it was going to be hard to implement. (My plan was to use my Onkyo AV receiver with multi-zone capability, which would've limited me to playing a single source on all connected speakers.)
Fast-forward to today, and it looks like Sonos might be the best solution. It's simple, pay-as-you-go, and looks like it'll work with the whole family's devices (iPhones, Android phones and tablets, iPad, Macs, PCs). If I understand their [great-looking but low-on-actual-details] website correctly, I can use the speakers wired or wirelessly, anywhere in the home, and each speaker can play a different source, or they can all play the same source.
What I'd like to know is, would it be possible to integrate NFC tags to automagically have the music follow me from room to room? In other words, when I bump my phone to a tag embedded in, say, the door frame, when I enter a room, and then a walk from that room to somewhere else in the house and bump a different tag, can I make the music stop in the room I left and pick up again in the room I've arrived at? Anybody know how to make that work?