Where is the message embedded in an audio file?

The message in an audio file is typically embedded within the audio data itself, which is a series of digital samples representing sound waves. This can be achieved through various techniques, such as audio watermarking, where information is subtly encoded into the audio signal without significantly altering the sound quality. Additionally, metadata can also be used to store messages or information about the audio file, such as title, artist, and album details, though this is separate from the actual audio content.