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

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

https://github.com/xiph/vorbis-tools
134b784a4d2f03e3fb5a389edc1adb84029b3cd3
