Temporary site until emdebian.org comes back

Add to your /etc/apt/sources.list.d/emdebian.list :
deb http://people.debian.org/~zumbi/emdebian/toolchain/$host_arch-$suite/ ./

Download emdebian.list into your /etc/apt/sources.list.d/

deb http://people.debian.org/~zumbi/emdebian/toolchain/amd64-lenny/ ./
deb http://people.debian.org/~zumbi/emdebian/toolchain/amd64-squeeze/ ./
deb http://people.debian.org/~zumbi/emdebian/toolchain/amd64-sid/ ./

deb http://people.debian.org/~zumbi/emdebian/toolchain/i386-lenny/ ./
deb http://people.debian.org/~zumbi/emdebian/toolchain/i386-squeeze/ ./
deb http://people.debian.org/~zumbi/emdebian/toolchain/i386-sid/ ./