Windows Media 9 Series Codecs Package

[RASTABT]

Don't know when this was released but I came across this late last night...
For network administrators who wish to deploy the Windows Media Audio and Video codecs, there is a codec installation package designed to enable network administrators to deploy these codecs within their network. This package only supports version 7.0 and later of the Windows Media Player, and Media Player for Windows XP.

Source

[Markbot]

I noticed this was part of the Windows update package released at the same time Media Player 9 was released. When I elected to install MP9, which had to be selected by itself, this was no longer in list as an opiton to be installed. So I assume that when I installed MP9 under XP Pro, this Codec pack went in at the same time.