You know those long boring conditions you have to agree to before installing software that no one ever reads? I did a word count on one, and it was 5771 words.
... If the WM-DRM Software's security has been
compromised, owners of Secure Content (“Secure Content Owners”) may request
that Microsoft revoke the WM-DRM Software's right to copy, display and/or play
Secure content. Revocation does not
alter the WM-DRM Software's ability to play unprotected content. A list of revoked WM-DRM Software is sent to
your computer whenever you download a license for Secure Content from the
Internet. Microsoft may, in conjunction
with such license, also download revocation lists onto your computer on behalf
of Secure Content Owners. Secure Content
Owners may also require you to upgrade some of the WM-DRM components
distributed with this software (“WM-DRM Upgrades”) before accessing their content...