Google's inexpensive Chromecast is already popular for streaming audio from sources like Play Music and Pandora to your television, but now it looks like the company wants a more specific approach for music. To that end Google has announced "Cast for audio," an audio-only version of the system that streams directly to connected and certified speaker systems, no extra hardware required. The first compatible speakers should reach the market in the spring of this year.

https://youtu.be/8q0yZomXuSw

Cast for audio utilizes the same simple interface and remote connection as Chromecast: simply tap the "cast" button on your phone, tablet, or browser tab, and the content will be sent over the local network to the speaker, at which point it pulls down the music directly from the Internet.