Windows Media Player security upgrade required?

[any ANONYMOUS forum user]

Windows Media Player,when i go to play ,message says the following:
security upgrade required/drm component,the owner of the protected content you are trying to access require you to 1st upgrade some of your microsoft digital rights management {drm components,when u click ok, a unique identifier and a drm security file will be sent to a microsoft service on the internet.

the file is replaced with a customized version that contains your unique identifier...

please tell me is this safe and exactly what is this all about? thanks