According to Adobe's SDK EULA text file, paragraph #2 (License):
You may distribute Sample Code in object code format only as substantially modified and only as part of Developer Programs. The Sample Code shall be distributed to Your customers under the terms of Your standard End User License Agreement, provided it includes terms that are substantially similar to those applicable to the Sample Code, as described herein. You are required to include Adobe's copyright notices on Developer Programs that include portions of Sample Code, except for those Programs in which You include a copyright notice reflecting the copyright ownership of Developer in such Programs.
So what I mean to say is: Adobe owns the copyright to the SDK code, I probably signed away my intellectual (I'm intellecktual?) rights to marketing this code while I was working for Adobe. MacHack is a Developer Program. So I believe it's fair and permissible to distribute the (substantially modified) Stamper sample code on the CD.
Thanks to John Warnock for appearing at MacHack and for heartily endorsing the idea of OpenSource!