that is one of the many reasons I do not use microsoft media player. give vlc a try. I have never had a problem playing any music or video on it. Never had to get a codec.
http://www.videolan.org/vlc/index.html
however to answer your question, see if anything at the following page helps
https://social.technet.microsoft.com/Forums/windows/en-US/0fe98151-6c95-42f5-88ca-a9a4900f8bf2/windows-media-player-12-does-not-let-me-relicense-my-media-usage-rights?forum=w7itpromedia
Hello, all:
I have a Windows 7 laptop and my Windows Media Player is version 12.0.7601.18840. When I try to play some of the songs in my library, WMP says "downloading media usage rights" and then gives an error that says "Page cannot be found". It seems to be trying to access this non-existent website: musiclicenses.liquiddigitalmedia.com. Some of the songs are ones I've owned literally for years. Can anyone shed some light on the situation? Why would I suddenly be unable to play some songs? Thanks in advance for your help.

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