Your computer probably has a headphone,or line out jack(3.5mm).Keep the volume down while first trying this output.Make sure you are plugging into the audio line out,or headphone output.The computer may control the volume level output too.You most likely could look up the manual from the manufacture's web site with the model # for more info.The speaker out is usually the same.This could get you started wither buying a DAC first.Use a cable like the one in the link to get started.LINK>[http://www.google.com/products/catalog?rlz=1T4TSHB_enUS325US326&q=rca+to+3.5mm&um=1&ie=UTF-8&cid=16378813889637267132&ei=J2y_S6eVGMOAlAf0qIHtBg&sa=X&oi=product_catalog_result&ct=result&resnum=3&ved=0CCkQ8wIwAg#ps-sellers]All kinds of radio stations.>[http://www.surfmusic.de/amerika.htm]
