title: Android select mp3 file
body: <p>Sorry if this has already been answered, but I can't specify my question very well.
  I have an activity that needs a song file from your device, and I want it when I press a button to open a dialog to ask you how you want to open a file (like to choose a file explorer) and then the user will select an mp3 file (it should be possible to enter both internal memory and external, at least those available to users, like in my Xperia V which has 2 internal partitions, and an SD Card), and when a music file is selected (.wav, .mp3, .acc files) to load its name and file path in my app. How can I do it?
  I am not providing any code, because that's all I need</p>