Sound Across Specific Slides in PowerPoint 365 for Mac

Once you add an audio track such as a music clip to your PowerPoint slides, you can let the inserted audio span across all your slides from the first one to the last by selecting the convenient Play Across Slides option.

Yes, that's a great solution if you need the same music clip to be playing while you move across slides. However, in the real world, there will always be a need for something different. What if you want the music to play only across some successive slides? What if you want the music to play from slide numbers 2 to 8, and let all subsequent slides play without any music? Or you may want to add another audio clip for the next set of slides? Either way, it is possible to limit the number of slides that your music will play across.

Follow these steps to play your audio clip for a specific number of slides in PowerPoint 365 for Mac:

1. We assume you have already set the audio clip to inserted an audio clip, and you are on the slide where you want the music to start playing. We inserted the audio clip on slide 2 of our 20-slide presentation, and we are now on slide 2.
2. Now, select the audio icon in the center of your slide, as shown in Figure 1, below. Doing so activates the two contextual tabs in the Ribbon. These two tabs are Format and Playback. Click the Playback tab to activate it, as shown highlighted in blue within Figure 1.
3. 
   Figure 1: Playback tab selected within the Ribbon

Contextual Tabs

The Playback and Format tabs are contextual tabs. Contextual tabs are special tabs in the Ribbon that are not visible all the time. They only make an appearance when you are working with a particular slide object which can be edited using special options.
3. Within the Playback tab, click the Start drop-down list, and choose the Automatically option, highlighted in red within Figure 2, below.
4. 
   Figure 2: Play across slides option within the Start drop-down list
4. Again, within the Playback tab, select the Play Across Slides check-box, as shown highlighted in red within Figure 3, below. Also, select the Loop until Stopped check-box, highlighted in blue within Figure 3, and the Hide During Show check box, highlighted in green within Figure 3.
5. 
   Figure 3: Required check-boxes selected to play the sound across slides
5. Now, access the Animations tab of the Ribbon. Click the Animation Pane button, highlighted in red within Figure 4, below.
6. 
   Figure 4: Click the Animation Pane button
6. Doing so brings up the Animations Task Pane, as shown in Figure 5, below.
7. 
   Figure 5: Animations Task Pane

Toggle the Animations Task Pane

The Animation Pane button works as a toggle option as far as the visibility of the Animations Task Pane is concerned. The first time you click the Animation Pane button, highlighted in red within Figure 4, shown previously on this page, the Animations Task Pane becomes visible. If you click the same button again, the Animations Task Pane disappears.
7. Within the Animations Task Pane, you will see an animation associated with your audio clip, as shown highlighted in red within Figure 5, above. Select the audio file in the Task Pane, and then click the Media Options triangle to reveal media options. You will see that PowerPoint has already set 999 as the number of slides in the Stop playing After text box, as shown highlighted in blue within Figure 5.

Why 999 Slides?

You find 999 typed in the After text box since that's the largest number that PowerPoint will allow you to add.
8. Now, change the value from 999 to the number of slides after which you want the music to stop. For example, you may want the audio clip to only play from slide numbers 2 through 8 for 7 consecutive slides. In that case, replace 999 with 7, as shown highlighted in red within Figure 6, below.
9. 
   Figure 6: Change the number of slides from 999 to the number you need

Play for Successive Slides, Again

If you want your first music clip to play from slide numbers 2 to 8, and then start another music clip on slide 10 that plays for several more consecutive slides, go ahead and add a new audio clip on slide 10. Thereafter bring up the Play Audio dialog for this audio clip, as shown in Figure 6, above, and type in the number of slides you want this new audio clip to span in the After box.
9. Test if your audio clip plays as expected. Make sure you save your presentation often.