I've been replacing my Google Homes and Chromecasts with Snapcast streamers, and this is the next thing I've been planning to look into.

It's truly absurd how the Google voice assistant USED to work properly for setting timers, playing music, etc, and then they had to break it 15 times and finally replace it with much slower AI that only kinda does what you want. I'm done.

Selfhosted is the way to go if you want to keep your sanity. My wife has basically given up on any Google/Apple voice assistants being able to do anything useful above "set a 10 minute timer".