* Ogg Splitter (splits Ogg files into the different Ogg streams) * Ogg Multiplexer (does the mupltiplexing of several Ogg streams into a file) * Vorbis Encoder (encodes PCM audio to vorbis. CBR and VBR modes) * Vorbis Decoder (decodes vorbis audio to PCM or IEEE float) --- mp3 よりも更に、コンパクトなファイルにできる? mp3 が特許料を徴収しだした