.mp3 Copy from the assets to persistentDataPath

I was on the android, you need to be copied to a .mp3 Application.persistentDataPath
.mp3 assets in
I tried using the following code, but fail
How should I do it?

		string fileName = "test.mp3";
		string sourcePath = Application.persistentDataPath+"/MyMp3/";
		string targetPath =  Application.persistentDataPath;

		string sourceFile = System.IO.Path.Combine(sourcePath, fileName);
		string destFile = System.IO.Path.Combine(targetPath, fileName);

		System.IO.File.Copy(sourceFile, destFile, true);

I would look to see if Application.persistentDataPath ends in a “/” giving “//MyMp3/”

Looks good for the:
Android is a unix system so the slashes go “/”

My path looks like
“/storage/sdcard1/1/Music/Beethoven - 9th.mp3”

Also try a dir exists and file exists.

Regards,
uAudio: Mp3 Player/Streamer - the mp3 player for unity