To run the tiltaudio firmware locally (if you have docker installed), you can use https://hub.docker.com/r/sker65/tiltaudio .
It runs a demo build of the firmware similar to https://demo.tiltaudio.com. You can try the web ui and also play all sounds from a sound pack.
If you don’t have docker for windows go here: https://docs.docker.com/desktop/setup/install/windows-install/
For macOS I would recommend OrbStack: https://orbstack.dev/