angrycoffee.com: Ogg Vorbis tutorial.
CoreVorbis: DirectShow filter for Ogg Vorbis audio codec.
Ogg Vorbis: iCast demo site.
Ogg Vorbis Information: Short FAQ and artist list.
OggHelp: Provides documents, guides, downloads, forums, and links.
The Ogg Vorbis CODEC project: Open source audio format.