Record Audio from Scene (On Play / Build)

Hello everyone!
I’m building an application that allows to compose auditory scenes with multiple sound sources and I have a single audio listener.
I want to add a recording button that will allow the user to play all the sources created on the scene and record the composed sound to save it to a wav/mp3 file.
I have been looking into Unity Recorder and NAudio to do this.
Is it possible to use the Unity Recorder to record sound after the build? Or can it only be used in the editor?
Has anyone tried to use NAudio in Unity?
Are there any alternatives? Any suggestions on how to record the sound that is being played by the game objects during runtime?

If anyone can help, it would be much appreciated!
Thanks in advance!

The Unity Recorder can only be used in the editor.
I don’t know of third-party packages that can do this in real time.