GMount ISO is a simple tool for Linux that facilitates mounting ISO images as a virtual drive. GMount ISO is a frontend to the mount command and is written using PyGTK and Glade. Virtual disc access rate is about 200 times faster than that of a physical disc.
The system will not know the difference.
GMount ISO is available in the Ubuntu repositories. You can install the tool using the command line.
sudo apt-get install gmountiso
Or Synaptic by typing gmountiso on the search box..