Your computer comes with built-in stereo speakers and selected models with an A/V port replicator come with external speakers. If your computer did not come with additional speakers and you wish to enhance the sound quality of your computer, shop Sony online at http://www.sonystyle.com/vaio or contact your local retailer. Make sure the speakers are designed for computer use.
See Connecting the speakers with built-in infrared receiver for instructions about how to connect external speakers supplied with the A/V port replicator.