How do you install KMTTG???

Hi everyone, I want to transfer some movies from my Tivo Roamio to my computer. It looks like the best way to do this is to use KMTTG. I have Java 8 installed, I downloaded KMTTG 2.1 and extracted the zip file to C:\KMTTG but I don't see an installation file anywhere. I saw the installation instructions on another thread and it says to extract to the location that I did mine and then says to launch kmttg.jar from there. Well that file is not there. There is another kmttg zip folder which I then extracted but I still dont see any installation file. Can anyone please help???

Thanks!!!