VLC can read various multimedia type such as mp3, divx, flv, oog, asf, wmv, mpeg-1, mpeg-2, mpeg-4, vob, VCD, DVD, etc… even you can play Google video.
I think VLC is very cool.
taufanlubis@toshiba:~$ sudo apt-get install vlc
Reading package lists… Done
Building dependency tree
Reading state information… Done
The following NEW packages will be installed:
0 upgraded, 1 newly installed, 0 to remove and 6 not upgraded.
Need to get 0B/1162kB of archives.
After unpacking 3305kB of additional disk space will be used.
Selecting previously deselected package vlc.
(Reading database … 126705 files and directories currently installed.)
Unpacking vlc (from …/vlc_0.8.6.release.c-0ubuntu5_i386.deb) …
Setting up vlc (0.8.6.release.c-0ubuntu5) …