YamahaMusicCast Binding

Hey everyone!
Im a total beginner but Im trying to connect my Yamaha WX-010 to OH on my RPi 3.
I found https://github.com/ddecockbe/yamaha and then I found also a jar file but im not able to add a jar file to my addons.

can someone tell me what should i do?
what should i do with this code or how can i add this jar file to my addons?

Maybe im doing something wrong… :roll_eyes: