deb-src http://ftp.de.debian.org./debian wheezy main contrib non-free deb-src http://ftp.de.debian.org./debian wheezy-updates main contrib non-free deb-src http://ftp.de.debian.org./debian wheezy-proposed-updates main contrib non-free deb-src http://security.debian.org./ wheezy/updates main contrib non-free deb-src http://ftp.de.debian.org./debian wheezy-backports main contrib non-free