deb http://ftp.de.debian.org/debian/ stable main contrib non-free
deb http://security.debian.org/ stable/updates main contrib non-free
deb http://ftp.de.debian.org/debian/ testing main contrib non-free
deb http://security.debian.org/ testing/updates main contrib non-free

deb-src http://ftp.de.debian.org/debian/ stable main contrib non-free
deb-src http://security.debian.org/ stable/updates main contrib non-free
deb-src http://ftp.de.debian.org/debian/ testing main contrib non-free
deb-src http://security.debian.org/ testing/updates main contrib non-free