### Answer
Retell AI currently does not support playback of audio files during calls. [(1) ](
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As a workaround, you can achieve similar functionality by using Twilio IVR to play the audio file, adding the content as text to be spoken by an initial agent (you can clone a voice to match a recording) , then transferring to a second agent, or incorporating the message into your agent's prompt.
There is no publicly available timeline for when native audio file playback will be supported.