Audacity To Record Your PC Speakers

Record PC Speaker/Earphone Audio Output With Audacity’s WASAPI Loopback

 Audacity will record the audio coming out of your computer if there is no Stereo Mix option
 Microsoft added this in Windows Vista,  7, 8, 8.1, and 10.

In Audacity, choose the “Windows WASAPI” audio host and then an appropriate loopback device — for example, “Speakers (loopback)” or “Headphones (loopback).”
Click the Record button to start recording the audio in Audacity, and click Stop when you’re done. Because you’re using Audacity, you can easily trim and edit the sound file when you’re done.

WASAPI loopback has an advantage over stereo mix or similar inputs provided by the soundcard because the capture is entirely digital