Please help, please!....I am shortly to be purchasing a Sonos Play 1 for a Christmas present, and am totally lost with everything I have read thus far. Really, desperately basic please - can I buy this as a standalone speaker with no other Sonos equipment? Is this worth it? Main point...is the ethernet connection required solely to connect the speakers initially and not required beyond that initial set up? Real novice over here - any help hugely enormously appreciated!!! Thank you so much.