<p>Securing multimedia communications, particularly audio data, is a major issue in information security. A range of encryption techniques is essential for preserving such material. This paper introduces an innovative audio encryption architecture that employs the Chen chaotic system for cryptographic key generation, supplemented with the Kushare transformation to improve security. The Chen chaotic system produces a key used for the first encryption of the audio. The pre-encrypted audio serves as the coefficient in a Maclaurin series expansion. Employing the Kushare transform to represent the data as an infinite hyperbolic series significantly enhances encryption protection. To decrypt, we use the opposite of the Kushare transformation along with the original Chen chaotic key, and we apply modular arithmetic to the resulting coefficients. The encrypted audio maintains its original quality, free from any discernible distortion or data loss. A comprehensive evaluation of many audio samples has shown the reliability and effectiveness of this encryption technique.</p>