For those who wants a more stable speech interface for MUSHclient, I made a LUA binary extension that interfaces with Tolk.
I saw that some distributions came with LUAJIT and they have the "ffi" module, but I don't know about it's ABI compatibility with standard MUSHclient distribution.
Feel free to use and modify it.
Note that I've packaged lua binary, tolk binary, and their respective libs alongside a luatolk binary built with Visual C++ 2015 toolchain with SDK target windows 10 SDK version 10.0.1734.0
Link: Download the file