You can embed a MP3 or OGG audio file by finding an .mp3 or .ogg audio file URL online, or uploading your own audio file to a storage bucket online, then pasting the URL into a Pitchdeck layer's Embed input field.

Example MP3/OGG URL

https://cdn.pixabay.com/download/audio/2024/10/18/audio_883a8b2ed8.mp3