This page explains how to insert links in a PDF so that clicking on them makes the computer say something. The instructions below only work on a Mac, and only if your PDF is generated via $\LaTeX$.
• Run appify.sh anna.sh. This produces the Mac app anna.app. Place anna.app in a location where your $\LaTeX$ file can access it.
• In your $\LaTeX$ file, insert \href{run:anna.app}{Anna} and typeset.