The fastest way depends on which tool you're using

PowerPoint and Google Slides both let you add music, but the steps are different and the file limits matter. In PowerPoint, you insert audio directly into a slide and it plays when you reach that slide during a presentation. In Google Slides, you embed audio the same way, but the file size limit is smaller and playback is less reliable on some devices. Both tools let you upload a music file from your computer or link to one you've stored online.

The real difference is what happens next: PowerPoint lets you trim the audio, set it to loop, and control when it starts and stops. Google Slides gives you fewer controls but works on any device with a web browser. If you need precise timing or want music to play across multiple slides, PowerPoint is the stronger choice. If you're sharing a link and want something simple, Google Slides works fine.

Key Takeaways

  • PowerPoint audio files can be up to 100 MB; Google Slides limits audio to 25 MB per file.
  • In PowerPoint, insert audio on the Insert tab, then use the Playback tab to trim, loop, or set a delay.
  • In Google Slides, go to Insert > Audio, upload or paste a link, then click the audio icon to adjust volume and autoplay settings.
  • Music embedded in a presentation file travels with it; linked audio requires the link to stay active to play.
  • Test audio playback on the actual device you'll present from, because browser and system settings affect how sound plays.

Adding audio in PowerPoint

Open your presentation and click on the slide where you want the music to start. Go to the Insert tab at the top, then click Audio (it may say "Audio" or show a speaker icon depending on your PowerPoint version). You'll see two options: Browse This PC to upload a file from your computer, or Browse Online to search for audio stored in OneDrive or other cloud services.

Once the audio is inserted, a speaker icon appears on the slide. Click it to select it, then go to the Playback tab that appears. Here you can trim the audio by dragging the start and end points on the timeline, set it to loop (repeat), adjust the volume, and choose whether it starts automatically when you reach that slide or only when you click it. If you want the same music to play across multiple slides without restarting, insert it on the first slide and set it to loop.

PowerPoint embeds the audio file inside your presentation, so the music travels with the file. This means the file size grows — a 5 MB song makes your presentation 5 MB larger. If you're emailing the file or uploading it somewhere with size limits, this matters.

Adding audio in Google Slides

Open your presentation and click the slide where you want music. Go to Insert in the menu bar, then click Audio. You can upload a file from your computer, paste a link to audio hosted online (like a YouTube video or a file in Google Drive), or search Google's audio library for royalty-free music. Google Slides accepts MP3, WAV, OGG, and M4A files up to 25 MB each.

After you insert the audio, a small speaker icon appears on the slide. Click it to open the audio options panel on the right side. You can adjust the volume, choose whether the audio plays automatically when you reach that slide, and set it to loop. Unlike PowerPoint, Google Slides does not let you trim audio directly — if you need to cut out parts, trim the file in an audio editor before uploading.

Google Slides stores audio in your Google Drive, not inside the presentation file itself. This keeps your presentation smaller, but it also means the audio link has to stay active. If you delete the audio file from Drive or change its sharing settings, the audio stops playing in the presentation.

File formats and size limits

Both tools accept common audio formats: MP3 is the most reliable choice because nearly every device plays it. WAV files work but are much larger (a 3-minute song can be 30 MB as WAV versus 3 MB as MP3). OGG and M4A work in both tools but are less universal.

PowerPoint accepts files up to 100 MB, which covers most music files. Google Slides caps audio at 25 MB per file, which is enough for a 5-minute song in MP3 format but not for longer recordings or high-quality audio. If your file is too large for Google Slides, convert it to MP3 at a lower bitrate (128 kbps instead of 320 kbps) using a free tool like Audacity or an online converter.

If you're linking to audio instead of uploading it (for example, pasting a YouTube link into Google Slides), the file size limit does not apply — but the link has to work when you present. Test it beforehand on the device and network you'll actually use.

Embedding versus linking audio

PowerPoint embeds audio by default, meaning the file is stored inside your presentation. This guarantees the audio plays as long as the presentation file is intact, but it makes the file larger and slower to email or upload. Google Slides stores audio in Drive and links to it, keeping the presentation file small but requiring the Drive file to stay accessible.

If you're presenting offline or on a network without internet access, embedded audio (PowerPoint) is safer. If you're sharing a link to a presentation and want others to hear the audio without downloading a huge file, linked audio (Google Slides) is better. You can also download a PowerPoint presentation as a video file, which bakes the audio in permanently — go to File > Export > Create a Video.

Timing audio across multiple slides

If you want one song to play continuously while you move through several slides, insert it on the first slide and set it to loop in PowerPoint, or set it to autoplay and loop in Google Slides. The audio will keep playing as you advance to the next slide, as long as you don't insert a second audio file on another slide (which would stop the first one).

If you want different music on different slides, insert a separate audio file on each slide and set each to autoplay. The previous audio will stop when the new one starts. In PowerPoint, you can also use the Animation pane to fine-tune exactly when audio starts relative to other elements on the slide — right-click the audio icon, click Add Animation, then adjust the timing.

Testing audio before you present

Always test audio on the actual device and in the actual location where you'll present. A file that plays fine on your laptop might not play through a projector's speakers, or might have volume issues if the projector's audio is turned down. Open your presentation in Slideshow mode (press F5 in PowerPoint or click the play button in Google Slides) and listen to the audio at full volume.

If you're presenting in a room with a projector, test the audio through the projector's speakers, not just your laptop. If you're presenting online via Zoom or Teams, test the audio while screen-sharing to make sure the platform captures it. Some video conferencing tools mute audio from presentations by default, so check your settings beforehand.

Frequently Asked Questions

Can I use copyrighted music in my slideshow?

Using copyrighted music without permission is not legal, even for personal or educational presentations. If you're presenting at work or school, use royalty-free music from sites like Unsplash, Pixabay, or YouTube's Audio Library (all free). If you own the music or have a license to use it, you can use it anywhere.

Why does my audio not play when I share the presentation?

In Google Slides, the audio file in Drive may not be shared with the people you sent the link to. Open the audio file in Drive, click Share, and make sure anyone with the link can view it. In PowerPoint, if you emailed the file, the audio should be embedded and play fine. If you uploaded it to OneDrive and linked to it instead of embedding, the link might be broken.

Can I adjust the volume of audio during a presentation?

In PowerPoint, you can set the volume before presenting using the Playback tab, but you cannot adjust it live during the slideshow. In Google Slides, you set the volume before presenting and cannot change it during playback. If you need to control volume during a presentation, use your computer's system volume controls or the projector's remote.

What if the audio file is too large for Google Slides?

Convert the file to MP3 format at a lower bitrate using Audacity (free, open-source) or an online converter. A 128 kbps MP3 is much smaller than 320 kbps and sounds fine for background music. Alternatively, use PowerPoint instead, which accepts files up to 100 MB.

Can I add music to a presentation without inserting an audio file?

Yes. In Google Slides, you can embed a YouTube video and mute the video while leaving the audio on — this works if the song is available on YouTube. In PowerPoint, you can insert a video file and do the same. This is less reliable than inserting audio directly, but it works if you cannot find the song as an audio file.