Re: Listen to audio..........

[Ralf Mardorf <ralf.mardorf@alice-dsl.net>]

Perhaps you need

"DVD Playback

DVDs are usually encrypted with CSS. CSS is not a codec. In any case,
here is some information on playback of encrypted DVDs. All media
players use libdvdcss2 in order to playback these encrypted DVDs

libdvdcss2 is available

    at the unofficial repository deb-multimedia.org.
[snip]
# Type these commands for amd64 machines.
wget
http://www.deb-multimedia.org/pool/main/libd/libdvdcss/libdvdcss2_1.2.10-0.3_amd64.deb
dpkg -i libdvdcss2_1.2.10-0.3_amd64.deb

# Type these commands for i386 machines.
wget
http://www.deb-multimedia.org/pool/main/libd/libdvdcss/libdvdcss2_1.2.10-0.3_i386.deb
dpkg -i libdvdcss2_1.2.10-0.3_i386.deb

Note: while adding an unofficial repository to APT sources can be a
risk, please note that APT package management system doesn't know
anything about packages installed directly with dpkg. These packages
won't be updated automatically if there is a new version on the
repository." - http://wiki.debian.org/MultimediaCodecs