You can cast BRIO web browser audio with Chromecast as follows:
1. Login to BRIO user account to launch BRIO web browser
2. Install the Google Cast Extension (download here), if not already installed on browser.
3. Click "Google Cast" button in Chrome
4. Select Chromecast device from drop-down menu
5. If you want to stop casting, simply click the Cast button again, and then click "Stop casting"
Next Article: "How To Connect To A FTP-Server in BRIO?"