From the Multicd.sh project's homepage:
multicd.sh is a shell script designed to build a multiboot CD image containing many different Linux distributions and/or utilities.
The avantages to making a CD with this script are:
* You don't need to burn multiple CDs for small distributions.
* If you already have the ISO images, it is not necessary to download them again.
* When a new version of one of the distributions is released, you can simply download the new version and run the script again to build a new multiboot image.
There is a long list of supported distributions. Mint is second on the list, just below Ubuntu.