last updated 6 April 2023

There are two wireless interfaces to the stereo.

The advantage of playing thru the stereo is you get better sound quality and use the outdoor speakers.

1. Bluetooth pairing to the Fosi Audio ampliofier. (see below)
Works with most mobile devices.
  - Works to redirect all sound from your mobile device (most are bluetooth enabled).
  - Requires bluetooth pairing first.
  - If a phone is connected thru bluetooth it will disable the chromecast connection.
  - The Fosi Audio amp uses bluetooth 5 which will work all the way out to the fire pit.

2. A chromecast audio interface (see below)
  - Works only with chromecast enabled apps, such as Pandora, Slacker Radio, Spotify, Google Play, iHeartRadio, ...
  which have casting built in.
  - Uses wi-fi for a little better audio

(Apple Music is protected by Digital Rights Management (DRM) and can't be played on other devices without some third party apps to remove DRM.)
Amazon Music only suports casting on android devices, Samsung, Huawei, LG, Motorola Moto, Google Pixel, ....

Here's a schematic of the connections for you techies.

Note: If a phone is connected thru bluetooth it will disable the chromecast connection.

Note: If the volume is too low from the Google Smart speaker you should change it by turning the google speaker volume up ["Hey google set the volume to 100"] rather than turning the volume all the way up on the Fosi Amp.

Note: The volume settings seem to vary depending on the connection.
If it is connected to comecast it can go from 1-100.
If you are playing thru the speaker it goes from 1-10
This seems to be flakey, my home google speaker works differently.
If you ask it to set a higher volume and it is not enabled it will tell you.

Here's some of the things you can do.

Can't find Chromecast in the Google Home app | Google
How to Reset Your Chromecast | Lifewire
How to Fix It When Google Home Can't Find Chromecast | Lifewire
Can't connect to Chromecast | Google Nest Community
See Google Home Mini for other things you can do with it. e.g. ask about the weather.