It would be nice to link documents from a SharePoint library. From what I can tell this is not currently supported.
We have similar use case. Linking "Add a Web Link" to a Sharepoint Word (.docx) document and then adding it to Deliver set of documents via Links tab. It seems that this feature is not available as Web Links are not available in Deliver - Links tab.
It's perhaps worth detailing your requirements in the Feature Requests discussion group - the Development Team are more likely to pick it up there.
so technically, it doesn't work as we'd hoped. In fact, I'm not sure its possible to reference any Sharepoint link and have it available when you go to the Deliver window. Major issue.
I am speculating, but the person you spoke to was perhaps referring to "it doesn't work" as in you can't use Web Links (or Folder Link) as part of the PDF when you go to the Deliver window...
well.... that seems to work. I wonder why support says it doesn't work?
There's an option to create a Web Link... could that work for you?