music doesn't advance in slideshow preview

In the last version of iPhoto I could arrow through the photos in Play mode and the music would advance accordingly and I could adjust the duration of photos to make the two match. Now when I try to adjust the duration of slides to match the music, the music won't advance in either Play mode or Preview mode. Is there a way to do this (advance the music with the advance of Photos)?

I upgraded to High Sierra which included the new Photos 3.0

The timing on many of my old slideshows changed and the music is no longer synced.