What is Chromecast Audio companion device?
Chromecast Audio is not a standalone device: it requires a Chromecast Audio companion device to initiate the streaming.
The companion device usually pass the streaming location and streaming info to Chromecast Audio. Chromecast Audio will then take over the streaming. You may check this guide on how to use Chromecast Audio to stream music and how to control Chromecast Audio from your Chromecast Audio companion device.
If the streaming source requires a membership/subscription, the Chromecast Audio companion device needs to authenticate itself first, then pass the streaming source to Chromecast Audio.
This requirement of a Chromecast Audio companion device is by design.
Chromecast Audio does not have its own dedicated input interface in Chromecast Audio.
Chromecast App and Apps with Chromecast support are required to use Chromecast.
The apps (Chromecast App and individual apps with Chromecast support) must run on a device, which acts as a Chromecast Audio companion device.
Chromecast Audio companion device is not exclusive. There is no “master” device: all devices are equal.
Any devices that can run these apps can control Chromecast Audio. No Chromecast Audio companion device can hog on Chromecast Audio.
What are supported systems for Chromecast Audio companion device?
Chromecast App for Android, Chromecast App for iOS, or Google Cast extension for Chrome browser require the Chromecast Audio companion device to have one of the following supported OSes:
- Android 4.1 (Android Jelly Bean 4.1) or later.
- iOS 7.0 or later.
- Windows 7, Windows 8, Windows 8.1 and Window 10 with Chrome browser.
- Mac OS 10.7 (Mac OS X Lion) and later with Chrome browser.
- Chrome OS (on a Chromebook running Chrome 28 or later).
Please note, Chromecast Audio does NOT work with Windows phone currently regardless of the Windows version on the phone.
For Linux users, you can still use Chromecast and Chromecast Audio, although Linux is NOT officially supported.
To use Chromecast Audio on Linux machines (i.e., using Linux machine as the Chromecast Audio companion device), you need:
- Chromium or Chrome version 28 or later.
- Google cast extension from Chrome web store. You can get it after installing Chromium or Chrome.
- open UDP port 1900. You may need open other ports and traffic depending on your firewall settings.
For Amazon Fire tablet (or Kindle Fire) users, Chromecast Audio are not officially supported. Please refer to this guide to find out how to use Chromecast Audio on Fire tablet.
Do you know the supported OSes for Chromecast Audio companion device?
It should not be difficult to get a Chromecast Audio companion device with officially supported OS. This is the ideal situation if you use Chromecast Audio frequently.
If you have any questions on the supported OSes for Chromecast Audio companion device, please let us know in the comment box below.
The community will try to help you find the solution.
For more Chromecast Audio guides, please visit Chromecast Audio guide page.
If your question is on Chromecast including both 1st generation Chromecast, and new Chromecast (aka Chromecast 2015), please visit Chromecast how-to guides page.