Locating Files

Never hacked an Arduino in my life but want to build the Lighthack OSC/EOS box for our ETC Element 2

Problems already; The (very concise) instructions says; Download Arduino OSC library from GitHub.com/CNMAT/OSC. When I get there I see about 30 files many with OSC in them? How do I know which what to download. Same for the sketch box  and Eos Test Application. I think (hope) I pulled down the IDE zip for Windows 10.