Things change rapidly in the WordPress world. The content in this post is more than a year old and may no longer represent best practices.
Following a tip from Lancelhoff.com, I’m going to try embedding the PDF version of the presentation from February’s Meetup here.
I had to use the second technique, surrounding the URL of the file with
<embed src="">, probably because this PDF is also a Flash presentation. (It’s some magic of MindManager’s.)