Thanks so much for all of your feedback - much appreciated! I set the videos to autostart and replaced the default previous button with a back to intro button on the ID badges slide.
Kamal - in Storyline, if you click on the Options tab (or double-click on a video after inserting it) you can choose to show video controls.
For those interested in Xtranormal: it is very affordable, and if you place your characters on a green screen you can superimpose them over any image/setting like I did in this demo (the background is the clinical learning center where I work). I used the desktop version of Xtranormal for these projects, then processed the videos with the Articulate video encoder.