SCRCPY 2.0 now supports screen mirroring with internal audio
SCRCPY 2.0 mirror your phone screen with audio to PC
Scrcpy is a free and open source application that allows you to display and control your Android device (video and audio) connected via USB or over TCP/IP, without requiring any root access. It works on Linux, Windows and macOS.
Scrcpy 2.0 is the latest release of this application, which brings some new features and improvements. One of the most notable features is the audio forwarding support, which enables you to hear the sound of your Android device on your PC. This feature requires Android 11 or higher.
I have made a video in this topic so watch the video down below for more information and links for download link will be just down below the video.
Click Here to download SCRCPY from official GitHub page
Click Here to download LetsView from official website
LetsView is also a free tool for mirroring phone to PC with internal audio and works with older Android versions too, only down side of using this is that you can't use mouse and keyboard to control your phone.