K-lite Codec Pack 5.0.0 Basic ~ 4.6 MB ~ July 10th 2009
Changelog:

Contains everything you need to play all popular video file formats.
Supports playback of AVI, MKV, MP4, FLV, OGM, MPEG, MOV, HDMOV, TS, M2TS, and OGG files.

Updated ffdshow to revision 3029
Updated Codec tweak Tool to version 3.0.0
Minor changes

Get it here.
K-lite Codec Pack 5.0.0 Standard ~ [...]