Place the cassette deck near the computer. Plug the cassette deck into an electrical outlet and turn it on.
Plug one end of the 1/8-inch cable into the output or headphone jack on the cassette deck. Plug the other end of the cable into the computer's "Line In" jack, which is generally blue. Plug headphones into the computer’s headphone jack.
Click the “Start” button. Click on “Control Panel." Click on "Hardware and Sound," then click “Sound." Select the “Recording" tab. Select “Line In" and click "Set “Default." Click "OK."
Click the “Start” button. Type “Sound Recorder” into the search box and press "Enter."
Click “Start Recording.” Press the “Play” button on the cassette deck and play the portion of the audio that you want to transfer. Listen to the audio on the headphones as you record and adjust the volume as needed.
Click "Stop Recording." Type a name for the digitized cassette tape into the "File name" box. Click "Save" to save the audio as a Windows Media Audio file.