@lang: French , English=Debian
http://rzr.online.fr/contrib.htm
\su root apt-get install wget wget -O- http://rzr.online.fr/docs/contribs/sources.list \ >> /etc/apt/sources.list apt-get update
cp /etc/apt/sources.list /etc/apt/sources.list.orig
cat » /etc/apt/sources.list « EOF
# unstable (sid) deb http://ftp.de.debian.org/debian unstable main contrib non-free deb-src http://ftp.de.debian.org/debian unstable main non-free contrib deb http://ftp.de.debian.org/debian-non-US unstable/non-US main contrib non-free deb-src http://ftp.de.debian.org/debian-non-US/ unstable/non-US main non-free contrib
# http://www.demexp.org deb http://thomas.enix.org/pub/debian/packages ./
EOF
apt-get install -t unstable demexp-client-gtk2
cp etc/apt/sources.list.orig /etc/apt/sources.list