Saving your default Layout Options to Never show Flow Headings should be sufficient for the printed page. The default page template shows the Flow title as a header, but giving the Flow and Project the same name will fix that.
Alternatively, you can save a document template with a revised page template, and use that for all new documents.
Or there’s this method of saving your own default page template.
There isn’t currently a way to remove the flow title from the audio export.