The Rocki concept has been floating around for a bit, but now the company's ready for the hardware startup rite of passage that is the Kickstarter campaign. The idea's a pretty straightforward one: a module that plugs into the back of an existing sound system via audio jack or RCA, essentially turning it into a wireless speaker system. The little hexagonal Play device streams music over your home network via 802.11b/g/n, which has some notable fidelity and range advantages over Bluetooth. Assuming you've already
