Viewing Articulate 360 Content in SharePoint Online

So my little input, as I also have 'download' problem.

First of all, you can discard entirely analytics-frame.html. If you rename it to .aspx nothing will happen, as sources INSIDE story.html refers to analytics-frame.html. If you change extension of the physical file, it won't magically replace the inside story.html reference to the new one. It will produce the same error in the console - file not found. And analytics-frame is not a necessary file to run the course.

And to the topic - I created library and uploaded files right into it. You can see it has library icon, and I have two documents libraries, which I one just created. 

And yet when I click story.aspx it tries to download. And it probably will, always, unless you have some option(*) somewhere checked that @Jennifer Brown didn't include in the instruction - not her fault, as we are just learning guys, not neccessarly sharepoints superadmins ;)

I did however nailed things down a little.
1. You need admin privileges or be able to contact your sharepoint admin (and convince them to enabling option opening vulnerabilites in the sharepoint ;)). 

2. You need to enable Custom Script, either on the admin level (permanent solution for all sites) or site level (temporary, 24h solution for just one site/site collection). You can read here.

3. Then you should view your site (communication or teams channel, doesn't matter at all) contents and navigate to the Styles Library. Inside, you can create new folder, for example TestCourse, and upload all Storyline published files (with of course ALREADT CHANGED story.html to story.aspx, because amount of people not getting that you need to do that beforehand is astonishing) into it. If you don't enable custom script, you won't be able to upload files here at all, that's why.

4. Now when you click the story.aspx you should indeed open a fully functional storyline course. You can embed it into any other site (at least within your space).

I've managed to do that on my 'test' sharepoint and now I will try to test it organization-wide ;) If someone might have an idea about (*), I mean why it is working from document library perspective for some, and for others not, I'd happy to hear. As enabling custom script and trying to run the course from another location than Styles Library produced "download" window instead of showing course, and trying to access direct link or embedding it, produced "File not found" notification.