Hey I have guitar hero III and I have the same problem as the guy here: https://forums.macrumors.com/showthread.php?p=4857411#post4857411. Except that I didn't install anything before, the game has never read my guitar as being plugged in (although the xbox light was on) but it works at the apple store, and ontop of that its the second copy I have bought and they both didn't recognize the guitar as being plugged in. I contacted all the game creaters; Aspyr, Red Octane and Activision and the best response I got was that I needed guitar hero III drivers. Where can I get?