libvorbis-dbg 1.3.2-1ubuntu2 (amd64 binary) in ubuntu oneiric

 Ogg Vorbis is a fully open, non-proprietary, patent-and-royalty-free,
 general-purpose compressed audio format for audio and music at fixed
 and variable bitrates from 16 to 128 kbps/channel.
 .
 This package contains debugging symbols useful for tracking bugs in
 applications with libvorbis.