Apply Scroll Effect Opacity To An Audio File

Question

I'm building a fairly simple one page scrolling site but I want a different audio file to fade up when user scrolls down to each new page, with the old audio file fading out creating a sort of cross-fade between the pages audio content. Is there a way to achieve this using Scroll effects opacity? I've got a simple audio embed html tag for the mp3's but perhaps there is a better way to do this that would allow for an easy application of the scroll effects opacity effect. Would love to figure out a way to do this without any coding. Happy to purchase a widget if anyone knows of any for a similar effect. Thanks for any help!
Sean

Answer 1

You need to break up your presentation into one presentation per nominee with a hyperlink to the next presentation set on the last slide. This will allow you to insert the audio voice over into the presentation to play across the multiple slides for the nominee. Place the audio using the Keynote Inspector > Presentation > Audio and drag the voice over file into the soundtrack well.
To set the hyperlink, you need to place an object on the last slide of each nominee set that when clicked will hyperlink to the next Keynote file. With the object selected use the Keynote Inspector > Hyperlink > Enable As A Hyperlink (ON) > Link To: Keynote Slideshow (in pull down menu) > navigate to the next file and select it.
Note: All Keynote presentation files should be opened prior to starting the overall presentation so that they start when the link is clicked, otherwise you will see an attempt to open a file, but the show will stall.
The object can be "invisible" with no fill and no stroke, but it can be a hard target to find on the fly. I would suggest placing it over a logo or other repeating graphic element.