Windows 7 update KB963660 - will replace certain audio and video codecs

My Windows 7 PC just picked up this update via Windows Updates. KB963660

"In prerelease versions of Windows 7, certain audio and video codecs expire after 90 days. When you try to perform certain operations in this situation, such as DVD playback, TV playback, and some device sync operations, the operation fails with an error message such as "Decoder not found." The affected codecs include MPGG-2, H.264, and AAC. Additionally, Dolby Digital-related media may not play successfully. In this situation, you also receive the "Decoder not found" error message.

This problem occurs because the trial period of the components expires on March 15, 2009. After you apply this update, certain audio and video codecs will not expire on this date."

UPDATE:

Is anyone else having problems installing this update? On my machine it says failure configuring updates, then, reverting changes.

I have FFDShow Tryouts Beta 6 and Haali Media Splitter installed.