A method for synchronizing media content via multiple device and speaker system includes: reading, by a server-side computing device, audio layout file comprising audio discreet channel mapped to speaker system, reading channel-based, object-based, scene-based, 3d audio, and audio layout files, receiving and processing, by a server-side computing device, head-related impulse response signal, head-transfer function signal, reverberant environment binaural room impulse signal, numerically simulated signal, and other binaural signal via sensors, receiving and processing, by the server-side computing device, bandpass transfer function, headphone transfer function, compensation filters, equalization filters, and other DSP algorithm, evaluating and processing encoding and decoding of media content, and transmitting the server-side message or packet to be used by the client device along with previously received customized stock media content and customized media content, to substantially synchronize the client-side playback of synchronized media content with server-side playback of the stock media content in client device and speaker system.