It was just a few days ago that news of a mysterioushome-oriented Google device was being prepped for testing in the homes of 252 company employees, but the associated FCC filing left most of the specifics up in the air. Now, if a new report from the Wall Street Journal holds true, Google’s next foray into the hardware space could be all about pumping up those jams.According to WSJ’s sources, the device in development is a “home entertainment system” that can wirelessly stream music throughout users’ homes.