Thank you for the feedback! Yeah I only had weekends to work on this so it is definitely small, but I thought it was still worth submitting since they are looking for 10 minute experiences. I am curious what you thought was lacking, or in what way was it lacking, just in general for next time.
I put an mp3 file in the same folder, and then after the final html export from Twine, I edited the html file:
<li id="credits">This story was created with <a href="<a href=" http:="" twinery.org="" "="">http://twinery.org/</a>">Twine and is powered by <a href="<a href=" http:="" tiddlywiki.com="" "="">http://tiddlywiki.com/</a>">TiddlyWiki</li>
So right after that I inserted my own:
<li><audio controls style="width:130px;height:60px;"><source src="TheFallofArcana.mp3" type="audio/mpeg">Your browser does not support the audio element.</audio></li>