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

https://github.com/xiph/vorbis
0657aee69dec8508a0011f47f3b69d7538e9d262

https://github.com/xiph/vorbis-tools
475e92a156d64486fc23e0f26e8457ad5c8522d5
