Sound Across Slides in PowerPoint 97 and 2000 for Windows

Follow these steps to loop a music or any audio file across slides in PowerPoint 97 and 2000 for Windows:

1. Navigate the first slide of the presentation and choose the Insert | Movies and Sounds | Sound from File… option, as shown in Figure 2, below.
2. 
   Figure 2: Sound from file
2. Doing so brings up the Insert Sound dialog box, as shown in Figure 3, below. Navigate to the folder that contains the sound track you want to insert. Select the sound file and click OK.
3. 
   Figure 3: Insert Sound

Before You Begin with Audio Files

Do explore our PowerPoint Friendly Audio Formats page to understand which common and exotic audio file types you can insert in your PowerPoint slides.

3. This action will insert the sound in the slide. Figure 4, below, shows the inserted audio icon that you'll find right in the center of the slide. At the same time, PowerPoint brings up a message window that asks whether you want the sound to play automatically in the slide show. Click the Yes button.
4. 
   Figure 4: Play the sound automatically
4. Right-click the audio icon and choose the Custom Animation option in the resultant menu, as shown in Figure 5, below.
5. 
   Figure 5: Right-click menu
5. Doing so opens the Custom Animation dialog box as shown in Figure 6, below. In the Multimedia Settings tab, check the Play using animation order option. In the While playing area, choose the Continue slide show radio button. For the Stop playing option, choose After and type 999 for the number of slides, as shown in Figure 6.
6. 
   Figure 6: Multimedia Settings

Why 999 Slides?

You type 999 in the After text box since that's the largest number that PowerPoint will allow you to add.
7. When done, click the OK button to get back to your slide.
6. Right-click the audio icon again and choose the Edit Sound Object option in the resultant menu, as shown in Figure 7, below.
7. 
   Figure 7: Edit Sound Object
7. This action brings up the Sound Options dialog box, shown in Figure 8, below.
8. 
   Figure 8: Sound Options
9. Under Play options, check the Loop until stopped box, as shown highlighted in red within Figure 8, above, and click the OK button.
8. In all versions of PowerPoint, you might see an audio icon on the slide where you inserted the sound. If you don't like the icon on the slide, just drag it to anywhere off the slide, and your sound shall still play fine.
9. Save your presentation often.