Audio on slideshow-Elements 2021

[#1]

Hi there...I have created a slideshow in Elements 2021 and have attempted to add audio throughout the entirety of the show. Although all of the songs are all the same type of file, only some of the songs are playing...any advice?

[#2]

What OS are you using?  (I assume you are talking about the Organizer's Slideshow feature and not Premiere Elements.)

What is the type of audio file that you are using? 

What is the source of the files?

Are you sure they are not copyright protected?

Does the order in which the songs are played make any difference?

Does the audio fail to play when you export the slideshow to a file?

[#3]

Yes, I am using the 2021 Elements Organizer

I have discovered that each song will play if I put it in certain spots in
the sequence, so it is not a copyright issue. They were all purchased from
iTunes.

The slideshow seems to only play every other song...and then repeats the
first song at the end of the show.