Go to click here (Betanews site), at the bottom of the first page is Mega Codec Pack includes everything needed to play online and offline computer media. This pack is from the makers of the K-lite codec pack. This version includes the Full K-lite codec pack as well as Quicktime and Realplayer codecs, and BS Player. This Pack includes codecs for the most popular compressions like Divx and Xvid as well as some of the less popular but still necesary codecs. This is your one stop codec resource.
It's a 20Mb download, but worth it, I don't use anything else.
If you just want the K-lite codec pack, as suggested by MAJ, I think it's on the 2nd/3rd page.
Hope this helps.
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