It's a heavy day at CES, and it's also a big day for the folks at Pure. Not only have they provided an updated release time table for the Sensia ("later in 2011" for an unknown amount) and Sirocco 550 (March for $499), but it's also branching out with a few unexpected launches. In order to get even more tunes to the outfit's blossoming line of WiFi radios, Pure has revealed its FlowSongs cloud-based musi