A beta version of the codec pack is available for testing
Quote:
Changelog: - Updated Media Player Classic Home Cinema to version 1.3.1430.0
- Updated ffdshow to revision 3166
- Updated Cyberlink MPEG-2 decoder to version 8.4.0.1014
- Updated Codec Tweak Tool to version 4.0.8
- Updated Win7DSFilterTweaker to version 2.6
- Updated MediaInfo Lite to version 0.7.26
- Broken codecs/filters can now also be removed during an unattended installation. This is optional and enabled by default.
- Various small tweaks
- Minor changes
Source: K-Lite Codec Pack - Beta versions 
Will K Lite codec pack work with 64 bit Media Player Classic? 
