In March's Entrepreneur magazine I have the cover story, which is about two men who started a successful MBA test-prep service. But more importantly, I give a shout to online dance music seller Beatport in a side feature about businesses that helped to change their industries. In Beatport's case, I give it credit for offering DRM-free (e.g. tunes that can be played anywhere, on anything) music long before Apple's iTunes followed suit. The cover package is here.