To add music or an audio file to a PowerPoint presentation, follow these steps:

For PowerPoint 2019, 2016, 2013, and PowerPoint for Microsoft 365:

• Open your PowerPoint presentation and navigate to the slide where you want to add the music or audio file. Click on the "Insert" tab in the top menu.

• In the "Media" group, click on the "Audio" dropdown arrow. Choose between "Audio on My PC" (or "Audio from File" in PowerPoint 2013) and "Record Audio".

If you choose "Audio on My PC" (or "Audio from File"):

• Browse your computer to find the music or audio file you want to insert. PowerPoint supports various audio formats, such as MP3, WAV, and M4A.
• Select the audio file and click "Insert" to add it to your slide.

If you choose "Record Audio":

• In the "Record Sound" dialog box, enter a name for your recording.

• Click the red "Record" button to start recording your audio. When you're finished, click the square "Stop" button. Click "OK" to insert the recorded audio onto your slide.

An audio icon will appear on the slide, which you can click and drag to reposition if needed. To customize audio playback settings, click on the audio icon to select it. This will reveal the "Audio Tools" tab in the top menu, which has two sub-tabs: "Playback" and "Format".

• Click on the "Playback" tab to access audio playback options: Choose when to start the audio by selecting "Automatically" or "On Click" from the "Start" dropdown menu.

• Check the "Play Across Slides" box if you want the audio to continue playing across multiple slides.

• Check the "Loop until Stopped" box if you want the audio to loop continuously until manually stopped.

• Use the "Fade Duration" options to set the fade-in and fade-out duration for the audio.

• Check the "Hide During Show" box if you don't want the audio icon to be visible during the presentation.

You can also use the "Format" tab to change the audio icon appearance, such as adjusting its size or applying visual effects. After customizing the audio settings, preview the audio playback in presentation mode to ensure it works as intended.