In its battle to cover consumers' homes with connected speakers, B&O recently began outfitting its gear with Google Cast functionality. Operating like a Chromecast does on your TV, the company's speakers can directly pull music from the streaming service you're using instead of either your smartphone or tablet. That's on top of its existing AirPlay, DNLA and Bluetooth support. After initially allowing owners to Cast their music to individual speakers, B&O confirmed today that the technology has been opened up to work seamlessly with the other B&O speakers in their multiroom setup.