Embracing AirPlay has usually involved a wholesale switch in hardware: years of speaker investment go out the window for the sake of skipping a wire. Onkyo doesn't have a problem if you bring your own equipment to the fray. Its new DS-A5 docking station brings Apple's WiFi media streaming to many home stereos, including those of rivals, as long as there's a wired or 802.11g-capable wireless router to feed the connection. Naturally, there's perks if you do live in an Onkyo universe -- any link using its Remote Interactive cable