How to use c# (unity) to get audio / file type mp3?

Unity Engine
1

I have a question about my game.
Firstly, my game is type of music(offline) but I have ideal which I want to get data online like list songs from URL (coding by a script in C# not appear in inspector).
Thanks for help.

6670528--763597--Screenshot (686).jpg
6670528--763597--Screenshot (686).jpg1920×1080 310 KB

6670528--763600--Screenshot (687).png
6670528--763600--Screenshot (687).png1920×1080 125 KB

6670528--763603--Screenshot (688).png
6670528--763603--Screenshot (688).png1920×1080 166 KB

6670528--763606--Screenshot (689).png
6670528--763606--Screenshot (689).png1920×1080 162 KB

2