Vorbis

Vorbis is an audio codec designed to replace MP3, since MP3 is not a royalty-free codec. It is normally used inside the OGG container, when it is called "Ogg Vorbis". Please note that the codec is -not- called Ogg, it's called Vorbis.

KickAssAnime has so far used this twice, in one of the releases of the InuYasha Movie and in Midori no Hibi.