apt:

# See sources.list(5) for more information, especialy
# Remember that you can only use http, ftp or file URIs
# CDROMs are managed through the apt-cdrom tool.

# Unstable
deb http://ftp.de.debian.org/debian unstable main contrib non-free
deb-src http://ftp.de.debian.org/debian unstable main contrib non-free

# Testing
deb http://ftp.de.debian.org/debian testing main contrib non-free
deb-src http://ftp.de.debian.org/debian testing main contrib non-free

# Experimental
deb http://ftp.de.debian.org/debian experimental main contrib non-free
deb-src http://ftp.de.debian.org/debian experimental main contrib non-free

# Sidux Sources
deb http://sidux.com/debian/ sid main contrib non-free firmware fix.main fix.contrib fix.non-free