avifile-vorbis-plugin 1:0.7.48~20090503.ds-2build1 (i386 binary) in ubuntu oneiric

 This package provides a plugin for the avifile library to decompress
 audio streams in Vorbis, which is a fully open, non-proprietary,
 patent-and-royalty-free, general-purpose compressed audio format.
 .
 You might want to install this package if you are using the avifile
 video player and want to watch videos which provide audio using this
 format.