Slideshow set up
Why can't I access music in my 'Music Library' when creating a slideshow?
iMac, OS X 10.11
Are they greyed out, or not listed at all, or are listed but don't play?
Songs that are DRM protected cannot be used in slideshows. This would include Apple Music songs that are all DRM protected. DRM titles are greyed out.
I suspect that songs that are stored in the cloud also would not be accessible. You would first need to download them.
-- Rich