I tried moving two of my webwidgets up into the course level as Jennifer suggested. I moved one that was pointing to a Flash Canvas/HTML Animation and one that was pointing to a video in our video server. I made them both invisible and put actions to show/hide when they got to/left the intended page.
While the animation and the video viewer did not appear until the correct page, the audio on the animation played on every slide up to its rightful page. The page would partially load, play the page 9 animation audio, then finish loading and then play the page.
I deleted the createjs-2015.11.26.min.js from the webwin folder of one of the pages; it did not change how that page performed.