If you're using Linux, you would need the spd-say utility. This comes preinstalled in Ubuntu, but you may need to install it on Fedora/openSUSE
This work is "part of the world." You are free to do whatever you like with it and it isn't owned by anybody, not even the creators. Attribution would be appreciated and would help, but it is not strictly necessary nor required. If you'd like to learn more about this way of doing things and how it could lead to a peaceful, efficient, and creative world (and how you can be involved), visit drym.org <https://drym.org>_.