There is a built-in recorder in Deepin win7 system, which can record the sound played in the computer. 1. First, you need to set up the computer and open the stereo mixing device of the computer. You can do this in the lower right corner of the taskbar. Right-click on the sound icon and click Open Recording Device in the window that appears. 2. In the sound window, right-click the blank space in the recording and click to open Show Disabled Devices. 3. The stereo mixing device is displayed at this time. It is disabled by default. Right-click the stereo mixing device and select Enable the device. 4. Then continue to right-click the stereo mixing device and select Set as Default Device. 5. On the stereo mix, right-click again to open the properties window in the menu window. 6. Find the level menu in the stereo mix properties window, and then increase the stereo mix here. 7. When playing some songs on the computer at this time, if you find that the stereo mixing device here starts to work, it means that the setting is successfully completed. This place will dance to the music. Description setup completed. 8. Now we start recording the music played by the computer. We open the computer's audio recorder program, start menu - all programs - accessories - audio recorder, thus opening the computer audio recorder program. 9. Now use the music player software to play a song. Of course, it is also possible to play songs on the web page. 10. Now click the Start Recording button on the audio recorder program. Record the sound. 11. After recording the required part, you can click here to stop recording. 12. Then in the window that appears, find the place on your computer where you want to save the song and save the recorded sound. 13. Open the recorded song and you can play and view it. The default saved format is WMA format.