VideoLAN 
An open source project of students from the École Centrale de Paris which aimed to broadcast video on the campus. It now supports streams from a satellite, a DVD, an MPEG2 compression card and the Xvid video format amongst others.
http://www.videolan.org/DeCSS source code
Text of the source code to DeCSS, a program allowing Linux users to play DVDs; DeCSS links.
http://members.fortunecity.com/turningtwenty
Margiplayer: DVD player for Margi Decoder Card
Margiplayer is a simple linux application that controls the playback of a DVD on a TV (no on screen display) through the Margi Decoder Card.
http://pont.net/margiplayer
Ogle DVD Player
Gives users to all options of DVDs such as menu navigation or crop and zoom under GNU/Linux, FreeBSD, NetBSD, OpenBSD and Solaris.
http://www.dtek.chalmers.se/groups/dvd/
Linux Media
Instructions and scripts allowing ripping DVDs to Divx with mencoder (mplayer).
http://dvdripping-guid.berlios.de/
Linux Digital Fansubbing Guide
Linux Digital Fansubbing Guide
http://dominia.org/djao/dvdsub.html
DeCSS for Linux and DVD
Software, information and legalese.
http://www.cs.cmu.edu/~dst/DeCSS/
