All of my files are designed in an open source program called Scribus.

My fonts are as follows:

Liberation Fonts

League Gothic from The League of Movable Type

So, as you can see, you can edit and hack my files using completely free tools.

The Mystic Pages use Helvetica and Times Roman, since those are the fonts that Mystic Stamp uses in their album.  I try to embed fonts into the PDFs whereever I can.