UBUNTU: Mount .nrg audio CD images

This PPA can be added to your system manually by copying the lines below and adding them to your system's software sources.

deb http://ppa.launchpad.net/cdemu/ppa/ubuntu YOUR_UBUNTU_VERSION_HERE main 

sudo add-apt-repository ppa:cdemu/ppa
sudo apt-get update
sudo apt-get install gcdemu
gnome-session-properties