Voice Recorder is the pre-installed audio recorder in Windows 10, Windows 11. This little tool provides us an effective way to record audios, voice and music. You can see how it can record audio in Windows 10 here. It supports high quality audio recording from your microphone. Since the publish of previous linked article, we received feedback from our site visitors asking if it is possible to record sound from internal sound card. For example, sometimes you may want to grad music playing on your computer, record online radio, record background music of a movie, etc. Some advanced audio recorders can record internal sound on computer. Most of them however are paid audio recorders. They may offer free trial version with limitations. They usually limit the length of the recorded audio file. Today, we will introduce you an easier way to record computer system sound using a free audio recorder.
Introducing Audacity
Audacity is a free, open source, cross-platform audio editor. It is available for free for Windows, Mac OS, GNU/Linux and other operating systems.

How to record internal sound on Windows PC?
Run Audacity on your Windows computer. Click View > Toolbars > Device Toolbar to enable the display of the device toolbar so you can select a recording device.

Step 1. Set the recording level using the input slider on the Recording Meter while watching the indications in the meter.
Step 2. Click Audio Host and select Windows WASAPI, then select the device with (loopback) in its name as the recording device.
Step 3. Play the audio, music or any sound you like to record. Then hit the Record button in Audacity to start recording.
Step 4. Click the Stop button to finish the recording. Go to save sound recording from File > Export. You will have the options to choose output format, file name, audio quality, before you save the audio recording to your computer.
Do NOT download the first linked audio recorder. $40 to buy, there is a free trial version which installs and records fine but then you only can use the file for TWO MINUTES. In what scenario would anyone ever go through the trouble of recording something just to have it for the next two minutes? I get they want you to buy the full version but holy bleep, worst free trial of any product I have ever seen in my entire life.
This is perfect for what I was looking for. Thanks for the sharing. I used to capture internal sound with Acethinker Audio Recorder online, It’s a free web-based application to capture audio right from the browser, share it here as an alternative method.