I don't have Nook. I have a Sony Reader Daily Touch edition. I received a gift card for Barnes and Noble and before to download my purchased eBook, I researched it and was told that I could read it on my Reader. Unfortunately, I can't read it. I'm trying to read it since Christmas, but it keeps saying "Protected by digital rights management". I have authorized and reauthorized my PC and Reader numerous times but I still cannot open it. My reader and PC both say that they are authorized. Can you help me? I don't know what to do.