Documentation does not include required information

[drink]

Documentation does not suggest where to go to get these libraries. The avifile website is also useless in this regard. Where do you get these libraries? I can't play Divx3 on Ubuntu... plays fine in Windows with the CCCP, this is pathetic at best.

Description: Divx4Linux video de/encoding plugin for libavifile
 Plugin for encoding DivX4 video. NOTICE:
  This plugin requires separate installation of libdivxdecore
  and libdivxencore library which is not a part of this package
  nor Debian itself. See documentation for more details who
  to obtain this library.
  In general you do not need this plugin.

drink@alexander:/usr/share/doc/libavifile-0.7c2$ grep -i core *
drink@alexander:/usr/share/doc/libavifile-0.7c2$ grep -i divx *
avicap.html: in realtime with various (DivX-)codecs.<br>
avicap.html: <li>windows dlls (including DivX3.11a, Huffyuv etc)</li>
avicap.html: <li><a href="http://www.divx.com/divx/linux/">Divx4Linux</a>
avicap.html: Can anyone tell me which processor I need to record with xvid/divx/ffmpeg
copyright: Eugene Kuznetsov <email address hidden> <email address hidden>
CREDITS: Eugene Kuznetsov <email address hidden> <email address hidden>
README.Debian: * Ffmpeg plugin is able to decompress DivX and many other formats
README.Debian: * Fast OpenDivX plugin is now also part of this package - but you
README.Debian: will need to download DivX4linux package for yourself and install
README.Debian: http://avifile.sourceforge.net/divx4linux-20020418.tgz

ProblemType: Bug
Architecture: amd64
Date: Sat Dec 19 04:09:30 2009
DistroRelease: Ubuntu 9.10
NonfreeKernelModules: nvidia
Package: avifile-divx-plugin 1:0.7.47.20070718-1.2ubuntu1
ProcEnviron:
 SHELL=/bin/bash
 PATH=(custom, user)
 LANG=en_US.UTF-8
ProcVersionSignature: Ubuntu 2.6.31-16.53-generic
SourcePackage: avifile
Uname: Linux 2.6.31-16-generic x86_64