Where is the podcast DTD?

Question

I understand that Apple is not required to keep the DTD available at http://www.itunes.com/dtds/podcast-1.0.dtd according to the XML specification.
http://www.w3.org/TR/REC-xml-names/#ns-decl says: "The namespace name, to serve its intended purpose, SHOULD have the characteristics of uniqueness and persistence. It is not a goal that it be directly usable for retrieval of a schema (if any exists)."
However, the technical specification for iTunes podcasts says the document does exist, and that it exists at that location.
http://www.apple.com/itunes/store/podcaststechspecs.html#_Toc526931674 says: "The namespace declaration points to a document that defines the iTunes tags."
I am interested in making a number of podcasts available on the iTunes Music Store, but I do not have any way to programmatically generate the XML file nor can I validate the code without actually submitting the code to the iTMS. It is really nice to have an English-language explanation of some of the tags and how to use them, but that translates poorly into machine-generated code.
I don't mind that Apple doesn't have the file where they specifically say it should be (after all, the spec says it is okay for the file to not even exist) but if the file does exist, I would really like to know where it is so I can use it.
Thank you!

Answer 1

I recognize that feedvalidator.org is recommended by the spec for validation purposes and that manual subscription forces the iTunes engine to validate my RSS file, but without the DTD there is no obvious way to modify my scripts to generate iTunes-happy XML code -- I am thus limited to inserting hand-crafted tags. This seems remarkably inelegant for Apple, and I was hoping that perhaps I was just not very good at finding the DTD, because the alternatives are clumsy trial-and-effort kludges.