Note by @fastfinge

It's super simple to set up if you want to play. Make a folder for it, change into the folder in your terminal, then do:
pip install --target=. kokoro-onnx soundfile
winget install wget
wget github.com/thewh1teagle/kokoro-onnx/releases/download/model-files/kokoro-v0_19.onnx
wget github.com/thewh1teagle/kokoro-onnx/releases/download/model-files/voices.json

Then you can call it from Python. It supports US and UK English, plus French, Korean, Chinese, and Japanese.