It's audio-only so you'll be locked to Spotify, Google Play Music and other sources. Chromecast Audio: As the name suggests, this device is mainly used for streaming music from the internet.There are three variants of Chromecast to choose from: It's a great way to pass controls to different users, and the UI is simple because everyone already knows how to use smartphones. You control the stick using a smartphone or web browser, and you can handoff control between devices to allow multiple people to get in on the fun. Chromecast is one of the most popular options, because of the way it lets you control everything. There are dozens of ways to stream media from the internet to your TV or stereo.