Add any audio file in the maker and it's mixed into the export, looped to fit. To avoid copyright issues, either use audio you own or export silent and add a licensed TikTok sound after uploading.
The two ways to add music each have a catch: baking in a commercial track risks a copyright strike, while relying on TikTok's library means you can't preview the timing while you build.
There are two approaches. Bake the audio into the video file before uploading, or export silent and add TikTok's own licensed sound after. Each has a real trade-off.
Baking it in gives you exact control — you hear the timing as you build, and the sound travels with the file to Reels and Shorts. The risk is copyright: a commercial track baked into your video can get the post muted or pulled. Using TikTok's library sidesteps copyright entirely but means you can't preview how the audio lands against your slides while building.
If you want a specific trending sound, the reliable path is: build and export the slideshow silent in the maker, upload it to TikTok, then add the trending sound from TikTok's own library in the app. Because it's coming from their licensed catalog, there's no copyright risk, and trending audio is a genuine reach signal.
You lose the ability to time slides precisely to the beat this way, but for most slideshows that precision isn't essential — the sound is atmosphere, not choreography.
Baking audio into the export makes sense when you own the track — your own music, licensed royalty-free audio, or a voiceover you recorded. Then you get exact timing and the sound follows the file everywhere.
Voiceover is underused and worth calling out: narrating your slideshow is copyright-free by definition, adds a personal layer, and often outperforms music for informational content because it gives people a reason to listen, not just watch.
If your audio is shorter than the slideshow, the maker loops it automatically to fill the full length, so the video never ends in silence. If it's longer, it's trimmed to match the video. Either way the export ends cleanly — you don't have to match the audio length to the slide count yourself.
Add any audio file in the maker and it's mixed in and looped to fit — or export silent and add a TikTok sound after uploading.
You can, if you bake in a commercial track. Use audio you own, or add a licensed sound from TikTok's library in-app.
The maker loops it automatically to fill the full length.
Yes — record a voiceover and add it as the audio file. It's copyright-free and often outperforms music for informational posts.