..::GET THE SOURCES FOR YOURSELF::..
Find the sources for OggMux at our download page. The sources are a little bit in a mess currently. The first steps should be to clean them up in an object orientated manner, thus making own classes out of file operations, Direct Show graph setup/treatment, file parsers,... anything you can think of. Please, fetch yourself a copy, install the DirectX SDK from microsoft and help us! Thanks a lot! :)