Sound Effects DURING Slide Transitions?

Essentially, is there a way to add a sound clip to play between slides, during the transition?

I'm creating a Keynote presentation that will be exported into Quicktime with hyperlink-activated transitions, and would like a specific sound to play during the 'Magic Move' transition. When the sound is imported into the first slide, once the transition begins, it fades out and stops. Yet if I drag and drop the sound file between the slides, it just creates a blank slide with the sound effect icon in the middle.

Any ideas?