VLC - the Open Source, cross-platform, media player and streaming server. It
is a highly portable multimedia player for various audio and video formats
(MPEG-1, MPEG-2, MPEG-4, DivX, mp3, ogg, and more) as well as DVDs, VCDs, and
various streaming protocols. It can play any region DVD without manually
changing settings. (in Home and Hobby)