P.S. CCCP can do this automatically, you don't need to apply any weird registry patches. Also it will turn on thumbnails for OGM and MP4. That reg file sets a lot of un-necessary things which are likely to be more troublesome in the end then not (like your play and open commands). Also if you are only installing Haali's splitter you do not need this registry file, so I have no idea really why people are sharing this madness. Playing with the registry is not good if you don't know what you are applying. Lemmings are fun to watch fall off cliffs though.
