this is /etc/apt/sources.list
I added the deb-src line

----------------------
deb http://packages.linuxmint.com/ maya main upstream import
deb http://archive.ubuntu.com/ubuntu/ precise main restricted universe multiverse
deb http://archive.ubuntu.com/ubuntu/ precise-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ precise-updates main restricted universe multiverse
deb http://security.ubuntu.com/ubuntu/ precise-security main restricted universe multiverse
deb http://archive.canonical.com/ubuntu/ precise partner
deb http://packages.medibuntu.org/ precise free non-free

#deb http://archive.getdeb.net/ubuntu precise-getdeb apps
#deb http://archive.getdeb.net/ubuntu precise-getdeb games
deb http://drbl.sourceforge.net/drbl-core drbl stable
----------------------

do all this in a new directory

root
sudo apt-get install dpkg-dev

non root
apt-get source pulseaudio

root
sudo apt-get build-dep pulseaudio

cd pulseaudio-1.1

non root
dpkg-buildpackage -rfakeroot -uc -b