Welcome to JustAnswer! I'm John. As I and other Experts work on your question, it
would help to know the following information, if you please:
* What version of OS X are you using? To obtain this information, click on the
Apple icon at top left, then choose About This Mac from the menu. The numbers to
the right of Version is what I'm looking for.
* What are you using to create the slideshow? Keynote
? What version? You should be able to play the show and it will play it continuously. F5 if in Powerpoint. You can test this before "going live".
* If you're placing the contents of the slideshow within a folder, you can right-click (or control+click if you have a single-button mouse) on the folder icon, then choose Get Info and it will tell you how much space the folder is taking up on the hard drive. Then, just ensure, before burning to DVD, that the size is less than the blank DVD disc's capacity.
Thank you for trusting us with your question. Answering these questions will help us help you more effectively and will ensure a quality solution for you so please be as thorough and descriptive as possible.