An apparatus and method for providing various audio environments in a multimedia content playback system are disclosed. The content processing terminal of the multimedia content playback system includes an audio signal processor for processing the audio source of multimedia content to produce a voice source and a background source, a controller for controlling the audio signal processor to adjust at least one of the voice source and the background source in accordance with a volume control signal, a GUI processor for acquiring a graphical user interface (GUI) component corresponding to the volume control signal, and a display processor for processing the GUI component and providing the processed GUI component to a display device.