squeezebox is a no brainer for this one. My wife loves our Duet System.
I installed speakers in the ceiling and with the controller and iPeng it is a dream.
no clunky UIs or boot times.
If you want a self powered unit the Radio version sounds amazing for a mono/ small speaker.
I have one radio and 3 duet recievers with 1 controller and it is a very nice system.
doesnt have all the bells and whistles that Sonos has, but its close.
