Throughout this week, readers are submitting their best life hack for a chance to win an autographed copy of our new book, Upgrade Your Life. Last Wednesday Adam showed you how to download music from shared iTunes libraries over the internet using third-party app Mojo, but PC users were disappointed to find the Windows Mojo beta only works on local networks. But reader Dexter put two and two together, and shares his Windows iTunes library over the internet with Mojo and the free VPN client, Ham