Behind the curious title, lies the modification of the jitter in the original device by replacing the clock circuit and adding buffering. Reportedly this mod, which roughly doubles the price of your Sonos Zone Player, reduces jitter dramatically and makes the player a perfect source for a high-end DAC, effectively combining a WAF* bordering on the unbelievable with audiophile geekiness.
Incidentally; the company is not affiliated with Sonos despite its name-likeness with Sonos founder Thomas Cullen.
*An apparently misspelled acronym reading: Spouse Acceptance Factor.
CD drive
Wifi
Flac audio
Digital IO
Ogg-Vorbis
uPnP support
Video