Connect the headphone jack on the tape player to the "Line In" jack on your sound card using the 1/8-inch cable. Turn on the tape player, if necessary.
Click the "Start" button and type "Sound" into the Search box. Click the "Sound" icon that appears under the "Control Panel" heading.
Click the "Recording" tab. Click "Line-In," then click the "Set Default" button at the bottom of the window. Click "OK."
Launch Ableton Live. Click "Options," then "Preferences." Click the "Audio" tab. Click the "Input Config" button next to "Channel Configuration."
Click to highlight both "1 (mono) & 2 (mono)" and "1/2 (stereo)," if they are not already highlighted in yellow. Click "OK." Close the "Preferences" window.
Click the "Arm" button, which looks like a circle inside a rectangle, at the bottom of the track labeled "1 Audio." Press "Tab" to open Arrangement View. Click the "Record" button at the top of the program window to arm Arrangement View for recording.
Click the "Play" button in Ableton. Press the "Play" button on the tape player. Click the "Stop" button when the recording is finished.