https://github.com/xiph/ogg
bada45718453ac27b56773ae663f7e65112f6a6e

https://github.com/xiph/vorbis
d22c3ab5f633460abc2532feee60ca0892134cbf

https://github.com/xiph/vorbis-tools
70d0d8e84d272047e8328d376bb983e897e3c670
