Using protected files (DRM)http://www.microsoft.com/windows/windowsmedia/player/faq/drm.mspxThe following questions have been added or updated in the Windows Media Player Using protected files (DRM) FAQ.© 2006 Microsoft Corporation. All rights reserved.What do DRM, protected files, and media usage rights mean?http://www.microsoft.com/windows/windowsmedia/player/faq/drm.mspx#25_1 DRM, which stands for digital rights management, is a technology used by content providers, such as online stores, to control how the digit...Wed, 17 May 2006 15:00:00 GMT How do I tell whether a file is protected and what I can do with it? http://www.microsoft.com/windows/windowsmedia/player/faq/drm.mspx#11_5To determine whether a file is protected, do one of the following:...Wed, 17 May 2006 15:00:00 GMTI can no longer access my protected files. What should I do?http://www.microsoft.com/windows/windowsmedia/player/faq/drm.mspx#11_2 There might be a problem with the media usage rights for the files. To help identify the problem, try playing a protected file and then cl...Wed, 17 May 2006 15:00:00 GMT Why do I get an error message that the rights (or licenses) for my files are corrupted or not valid? http://www.microsoft.com/windows/windowsmedia/player/faq/drm.mspx#11_4The DRM system on your computer is corrupted. This problem may occur if you have replaced hardware components in your computer. As a result, existing...Wed, 17 May 2006 15:00:00 GMT