Google Chromecast Audio: Stream your favorite music with Google Chromecast Audio. Simply plug into your speaker's auxiliary input and connect to your Wi-Fi network. Then just tap the Cast button from your favorite apps on your phone, tablet or computer to cast songs, radio stations and podcasts to your speaker.
This product makes streaming music in the house really easy. I bought this and paired it with my speakers and have a better sound system and one that's much cheaper than going the Sonos route