How to Clear DRM restriction from iTunes purchased songs and videos

This tutorial introduces the restriction brought by iTunes, and the way to clear DRM restriction from iTunes songs and videos, as well as some relative tips.

Before talking about how to clear DRM restriction, let’s check out the definition of DRM preferred by DefectiveByDesign first:

"Big Media describe DRM as Digital Rights Management. However, since its purpose is to restrict the user, it is more accurate to describe DRM as Digital Restrictions Management. DRM Technology can restrict users’ access to movies, music, literature, indeed all forms of digital data."