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Sending secret message need an algorithm that can protect message to receiver without knowing by other and keep the originality of message. Previous research, encoding secret message in video inserted in frame while audio secret message inserted in bit audio. In this paper, try to encode the secret message at video file to encode in audio. Audio separated from video in order to encode secret message in audio. Echo Hiding method used in encode secret message to audio process. Testing use Bit Error Rate (BER) method to analysis modification in audio and Normalized Correlation (NC) analysis authentic the secret message. Based on experiment, message inserted in audio more authentic on mono audio channels than stereo audio channels.