To add music to a PowerPoint presentation that plays throughout the entire slideshow and set slide timings, you can do the following:
- Insert music: Select the Insert tab, then Audio, and then Audio on My PC. Select the music file you want to use, then click Insert.
- Set music to play in background: With the audio object selected, open the Playback tab and select Play in Background. This will automatically start the audio file and play it across multiple slides.
- Add slide timings: Click the Transitions tab, then under Advance Slide, check the After box. Enter the number of seconds you want each slide to display.
- Apply timings to all slides: Click Apply To All.
- Check Use Timings: Click the Slide Show tab and make sure Use Timings is checked.
You can also record your own audio to add to your presentation.