PowerPoint Sounds and Looping

If you have a presentation that loops and there' s a music file playing all the way through then the music will stop and restart from the beginning each time the show loops.

What you would probably prefer is the music to keep playing independently.

Create your presentation with automatic slide transitions Create a new slide and move it to slide one. This slide should not have an automatic transition. Create a "custom show" for all the slides EXCEPT the new first slide. (Slide Show > Custom Shows > New)

On the new first slide insert your music and set it to stop playing after 999 slides. (or use play CD or transition sound) Insert an action button or shape onto slide 1 and in Slide show > Action settings create an "on click" hyperlink to the custom show. Be sure to tick "Show and return" (this is important!)

In Slide Show > Set up show tick "Loop continuously until Esc" Start the show and click the action button to start the custom show. As long as there are no other sounds the music will continue playing when the presentation loops.