u have to get a plug with both "male" sides... just like the plug u use for your headphones.. but both sides the same... then attach one to your sound card behind your computer... (the plug u would use for a microphone)... then plug the other end into your stereo... (the plug you would use for headphones)... get a program that records (ex. sound forge, cool edit 2000,...) and press record... and ure done... hop this helps