HotMedia is a set of scripts used to create a live system off of the Mandriva Linux distribution. With some minor changes it should also work on other distros.
The first live system created with the HotMedia scripts is the new MCNLive version called "Kris". This is a live system build upon MandrivaLinux 2010.0.
More information will come soon. You can check SVN if you like:
For MCNLive, we have created a simple remaster script as a graphical front-end for the mkhotmedia script. The latest version of this script can be found on it's own subversion repo, here.