Display Storyline on Sharepoint Site

I had a Storyline file working on SharePoint 2013 that I inherited from someone else. It works like a web page and is I believe built using a web part. The link that should launch it ends in a .aspx file. However, when I check the folders via Windows Explorer, I can't find an aspx file. It's not working correctly at all, but I don't know what to do to fix it.  If I delete older presentation.html files, I get a 404 error. With the files, the page displays at the wrong size and with parts of the file not working. I'm stuck.