Get Song Information with Android

I am writing a program which I would like to have give the user the information of their songs. How would I have the program go into the phone's root directory and get the information of the song开发者_如何学编程s? I know where the songs are located on the devices. I am targeting OS 2.2 if the makes a difference.

You'll need an ID3 tag reader. You could try and start here: http://www.jthink.net/jaudiotagger/.