Although I'm not condoning RetroRefurbs actions on making prints of artwork that they probably don't own the license to reproduce, I do find it slightly cheeky that in PPS's own product (MMr) they are using LGPL software (SDL 1.2 for one) and not providing the appropriate license in the download. IANAL but at the very least they should have a readme included in the download that links to the appropriate LGPL.
Also it appears that have used a TTF font that they aren't supposed to be redistributing:
This typeface is the property of Monotype Typography and its use by you is covered under the terms of a license agreement. You have obtained this typeface software either directly from Monotype or together with software distributed by one of Monotype's licensees.
This software is a valuable asset of Monotype. Unless you have entered into a specific license agreement granting you additional rights, your use of this software is limited to your workstation for your own publishing use.
You may not copy or distribute this software.