When dealing with codecs, more does not equal better.
Having the least amount on your system is the best configuration.
This is exactly what these packages will do for you.
You will no longer be restricted to using a specific player.
Windows Media Player and Media Center will be able to play all your files.
The Win7codecs package does not change or interfere with what Microsoft has going on concerning native codec support in Windows Media Player 12 and Media Center.
DXVA accelerated H264 playback is provided by the codec package for all other capable players.
1.0 Beta 2
Product page: here