FiB3R

Is this feature still not available?

Cast your audio from your Android device Connect your Android device to the same Wi-Fi network as your Chromecast Audio or speaker with Chromecast built in. Open the Google Home app . In the top-left corner of the home screen, tap Menu > Cast Screen/audio > Cast Screen/audio.

Chromecast Audio support comes ever closer. Pleeeeeeeeeease put that near the top of the list.