I’ve tried lots of path combinations for my media file in the HA media folder - Every time I use the cast node, I get
“Not able to load media:Load failed Not able to load the media.”
HA is seeing the request from NodeRed, because the media player in the media section of HA shows a NodeRed icon beside it after the call, but the actual file won’t play.
Isn’t it so crazy that a simple task like playing an mp3 on a device in your home is so convoluted and hard to do. HomeAssistant, please make this easier! I have strugged with this for years, got it working once, then suddenly it stopped working and I have never been able to resolve it. All I want to do is make a doorbell sound ring! Perhaps HA should add their own noises into the Homeassistant itself that Google Devices can access.