Goals
The aim of this project is to provide the most complete implementation of the xiph.org codecs for Windows and Directshow. This includes decoders and encoders for all the xiph.org formats as well as annodex. It is released under a BSD license, so they can be used by both open-source and commercial applications.
Current State
Besides the directshow filters which many people are familiar with. The source distribution also contains many useful tools, for debugging and validating ogg files, which build on multiple platforms. There is also a .NET media player class which can basically provide an "instant" media player in any .NET application, as well as an early implementation of an apache2 module which can provide server side seeking (currently only of annodex files, but soon also ogg files).
More information about the libraries and tools that are available in the source distribution can be found in the developers section.
Contact
If you have questions, bug reports, feedback, suggestions, or want to talk about your projects using oggcodecs, email xiph-dev@list.xiph.org, or the appropriate Xiph developer mailing list.
The current maintainer is Cristian Adam - the original author is Zen Kavanagh.
You can still find Zen on IRC on Freenode servers (www.freenode.net) in #vorbis, #theora or #annodex, nickname illi.