I meant for the VST plugin.

The janky way to do this would be to run it locally, and setup a watch job to reload the audio file into a vst plugin every time the file changes.

The backend now is in WASM. I have a plan on how do this in a VST, I had done a version with a Rust+WASM backend in the past. My main concern is getting a Webview working for the editor, which is custom made, but I think that's also solved by now. The goal would be exactly the Web version working as a VST plugin with its real-time audio engine.