Help- using an arduino to make a midi controller

Man, we've spent months working hard on this project and you want us to share everything we did? It doesn't work that way.
Buy arduino, buy everything that is needed to make it work, get familiar with arduino IDE and then, if you find some problem you can't solve, ask us and we'll tell you. But don't expect complete how-to or complete code.

EDIT: When I started this project I knew absolutely nothing about programming and absolutely nothing about electronics. So, I think this project has been the most educating thing that I've ever done. Keep this in mind and do it yourself.