As the Kindle format uses non-standard parameters in the <audio> and <video> tags to designate the source file, I had to change those to actual paths. I apologize if some of the embeded stuff is not playable in the browser, as I edited the latter two books half-asleep (after 2 shifts of work). Strangely enough, Chrome has a bug that prevents it from play some of the shorter audio clips. If one of the clips does not play, it sometimes helps if you refresh the page in the browser and click play again.