This article is from the Amiga CD32 FAQ, by Stuart Tomlinson with numerous contributions by others.
A: Yep, use one of these CDs before the Photo CD... Network CD Weird Science Photolite Eureka
A: Olaf Barthel wrote:
In Winter 1994 I wrote a commercial program for this purpose. It can read both plain Photo CDs (such as the golden Photo CD Master discs) and interactive Photo CD portfolio discs. The program uses technology licensed from the Eastman Kodak Corporation. It is called "FolioworX Player" and retails for about DM 100,-. Blittersoft is the official distributor in the UK.
A: This is a quick description made after reading Asimware's info sheet (it's probably better to read the full thing for yourself if you're interested before making up your mind):
Asimware's Photo CD Manager costs US $39.95/CDN $47.95 and works on the CD32 and any Amiga with Kickstart 2 or above. It displays thumb nail images in groups of 10 on a sort of tape deck display. From this you can choose one or as many pictures as you want and view them as a slide show in any order. If you've got a CD32 or an AGA Amiga it displays them in 262144 colours, otherwise 4096.