I like aethel´s idea best: I think it´s clear enough, but still flexible. Option 2 would also make it clear, but implies a separate page for the fic, which may not always exist. 1 also seems easier: we´d only have to change the template once, but for option 2 editors would have to add a header each time. Editors could still use a header like this if they want to/think there should be a page for the fic, but I wouldn´t make it a general suggestion for every podfic page.
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Talk:This Never Happened
Talk:Trying to Communicate
Template talk:Podfic
I like
For disambiguation I prefer "xxx (fanfiction)".