How to open a local file with JavaFX?

I've wrote a mp3 player and works fine in desktop mode (jar file). But when I try to run it via web an AccessControlException is thrown.

I had the same problem with the buttons graphics, and I solved it by uploading the graphics to an image server. Obviously I don't want to do the same with the songs. I want that any user can play their local songs, using a FileChooser.

¿How can I do this?

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More details:

The AccessControlException exception occurs here:

try
{
    // f is a File
    listaCanciones.getItems().add(f.getName());     //adding filename to a ListView (works fine)
    mp3Tmp = new Media(f.toURI().toString());       //creating a Media object
    listaReproduccion.add(new MediaPlayer(mp3Tmp)); //creating MediaPlayer object and adding it to a playlist
}

The exception's toString() is:

java.security.AccessControlException: access denied ("java.io.FilePermission" "I:\music\song.mp3" "read")

If you want to access the local filesystem from a jnlp deployed application:

1. Request appropriate permissions in your jnlp file.
2. Sign the application.
3. The user has to accept a dialog prompt to grant those permissions to your application.

You can find more information in the Java client deployment guide:

• 3.2.4 Run in Sandbox Unless Signed and Trusted.
• 5.6 Sign the JAR Files.
• jnlp security element - you shouldn't need to tweak this directly, instead you should specify the required permissions using your packaging tool (e.g. -allpermissions for the javapackager tool).

Note: an application which is not deployed via jnlp does not run in a sandbox and does not have the above requirements.

Oracle supply a FAQ for code signing.