Accessing LoL Sound Files and Images MAC

Hello, I've got a few quick questions to ask, and I figured someone here probably knows the answers. I'm working on a project and I was wondering how I can get access to the sound files (for champions) and images (champion icons) used in the game? On Mac I have been unable to find these files looking in the Riot Games or LoLClient folders. Do I need some special program to open the files that are in there? (In the Riot Games file there is only a 'machine.cfg' file)

Any help would be gladly appreciated. Thanks!