Deniability of audio recordings by living people

Recordings of that sounds like someone saying something may not be genuine and therefore the suspect should be allowed to state to the court "I did never say that thing you got on tape."

Proving denied audio recordings

If media forensics proves beyond suspicion the genuinity of the media in question or if credible witness to its creation is found, the media should be considered proof of person X having actually said that to a microphone.