I've downloaded the (xfce-4.10.tar.bz2) from the xfce website, unpack it in Debian and now i have this multiple files showing up.
exo-0.8.0.tar.bz2
exo-0.8.0.tar.bz2.md5
exo-0.8.0.tar.bz2.sha1
garcon-0.2.0.tar.bz2
garcon-0.2.0.tar.bz2.md5
garcon-0.2.0.tar.bz2.sha1
gtk-xfce-engine-3.0.0.tar.bz2
gtk-xfce-engine-3.0.0.tar.bz2.md5
gtk-xfce-engine-3.0.0.tar.bz2.sha1
libxfce4ui-4.10.0.tar.bz2
libxfce4ui-4.10.0.tar.bz2.md5
libxfce4ui-4.10.0.tar.bz2.sha1
libxfce4util-4.10.0.tar.bz2
libxfce4util-4.10.0.tar.bz2.md5
libxfce4util-4.10.0.tar.bz2.sha1
Thunar-1.4.0.tar.bz2
Thunar-1.4.0.tar.bz2.md5
Thunar-1.4.0.tar.bz2.sha1
thunar-volman-0.8.0.tar.bz2
thunar-volman-0.8.0.tar.bz2.md5
thunar-volman-0.8.0.tar.bz2.sha1
tumbler-0.1.25.tar.bz2
tumbler-0.1.25.tar.bz2.md5
tumbler-0.1.25.tar.bz2.sha1
xfce4-appfinder-4.10.0.tar.bz2
xfce4-appfinder-4.10.0.tar.bz2.md5
xfce4-appfinder-4.10.0.tar.bz2.sha1
xfce4-dev-tools-4.10.0.tar.bz2
xfce4-dev-tools-4.10.0.tar.bz2.md5
xfce4-dev-tools-4.10.0.tar.bz2.sha1
xfce4-panel-4.10.0.tar.bz2
xfce4-panel-4.10.0.tar.bz2.md5
xfce4-panel-4.10.0.tar.bz2.sha1
xfce4-power-manager-1.2.0.tar.bz2
xfce4-power-manager-1.2.0.tar.bz2.md5
xfce4-power-manager-1.2.0.tar.bz2.sha1
xfce4-session-4.10.0.tar.bz2
xfce4-session-4.10.0.tar.bz2.md5
xfce4-session-4.10.0.tar.bz2.sha1
xfce4-settings-4.10.0.tar.bz2
xfce4-settings-4.10.0.tar.bz2.md5
xfce4-settings-4.10.0.tar.bz2.sha1
xfconf-4.10.0.tar.bz2
xfconf-4.10.0.tar.bz2.md5
xfconf-4.10.0.tar.bz2.sha1
xfdesktop-4.10.0.tar.bz2
xfdesktop-4.10.0.tar.bz2.md5
xfdesktop-4.10.0.tar.bz2.sha1
xfwm4-4.10.0.tar.bz2
xfwm4-4.10.0.tar.bz2.md5
xfwm4-4.10.0.tar.bz2.sha1
What to do next ?