Use a built-in screen recorder or audio recorder on your operating system
Select the computer’s output device or system audio as the recording source
Enable stereo mix if your sound settings provide it
Use virtual audio cable software to route system sound into a recorder
Connect the computer’s audio output to an external recorder using an audio cable
Use a USB audio interface for higher-quality capture
Open the recording software and choose the correct input source
Start playback on the computer and begin recording
Stop recording when finished and save the audio file
Check the recording for sound levels and clarity
Export the file in the desired audio format