How to use external audioclips from the Android Music folder?

Hallo everyone,

The last couple of weeks I have been working on my game, but unfortunately I have stumbled upon a problem which I have not been able to solve yet.

My game should give the player the freedom to select music from his Music folder (which every android device should have) and then play it in the game.

While I understand that the www class is probably the way to go here, I was wondering how to set it up in a way to always find the right folder (music folder) and then show the contents.

Thanks in advance!