Moving songs from VLC folder to iPhone 7 Plus Music library

I am a newbie to the iPhone. I use the VLC app to transfer songs from my computer to my iPhone 7 Plus using WiFi. How do I get those songs to show up in my Music library so I can play them using the Apple Music app? Right now they only show up in the VLC app folder. Is there a way to transfer songs directly to the Music library on my iPhone from my computer?