In Keynote for Mac, I can not play an mp3 file (the same file) on more than one slide.

In Keynote, I want to play a single MP3 file on multiple slides as a sound effect. When I drag the file to each slide, it seems to insert the file fine. When I play the presentation, only the first encounter with the sound plays. Even if I start part-way through the presentation, the sound plays on THAT slide, but not successive slides. I have tried to duplicate the sound file and give it a different name for successive slides, but that does not work either. Anyone have an idea or workaround?

Mac Studio

Sonoma 14.6.1

Keynote 14.0(7040.0.73)