Added donation panel

src/uk/co/majenko/audiobookrecorder/AudiobookRecorder.java

@@ -524,6 +524,11 @@ public class AudiobookRecorder extends JFrame {
                 }
             }
         }
+
+        if (!Options.getBoolean("interface.donations.hide")) {
+            JOptionPane.showMessageDialog(this, new DonationPanel(), "Thank you", JOptionPane.PLAIN_MESSAGE);
+        }
+
     }
 
     public static void main(String args[]) {

src/uk/co/majenko/audiobookrecorder/DonationPanel.java

@@ -0,0 +1,56 @@
+package uk.co.majenko.audiobookrecorder;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.*;
+import javax.swing.border.*;
+import java.net.*;
+
+public class DonationPanel extends JPanel {
+    public DonationPanel() {
+        super();
+        setLayout(new BorderLayout());
+        JLabel icon = new JLabel(Icons.dollar);
+        icon.setBorder(new EmptyBorder(10, 10, 10, 10));
+        add(icon, BorderLayout.WEST);
+
+        JTextArea label = new JTextArea(
+            "Thank you for using AudiobookRecorder by\n" +
+            "Majenko Technologies. This software is\n" +
+            "Free Open Source Software (FOSS). It is\n" +
+            "created and maintained voluntarily with\n" +
+            "no possibility of any profits from it.\n" +
+            "If you enjoy using this software and end\n" +
+            "up making millions of dollars from using\n" +
+            "it we hope that you would maybe kindly\n" +
+            "donate a couple of those dollars to the\n" +
+            "developer to help with the costs of maintaining\n" +
+            "the software.\n" +
+            "\n" +
+            "You can donate by going to:\n" +
+            "\n" +
+            "https://paypal.me/majenko"
+        );
+
+        label.setEditable(false);
+        label.setFocusable(false);
+        label.setBorder(new EmptyBorder(10, 10, 10, 10));
+        add(label, BorderLayout.CENTER);
+
+        JButton donate = new JButton("Donate!");
+        donate.addActionListener(new ActionListener() {
+            public void actionPerformed(ActionEvent e) {
+                if (Desktop.isDesktopSupported()) {
+                    try {
+                        Desktop.getDesktop().browse(new URI("https://paypal.me/majenko"));
+                    } catch (Exception ex) {
+                    }
+                }
+            }
+        });
+
+        add(donate, BorderLayout.SOUTH);
+
+
+    }
+}

src/uk/co/majenko/audiobookrecorder/Icons.java

@@ -30,4 +30,5 @@ public class Icons {
     static public final ImageIcon mic         = new ImageIcon(Icons.class.getResource("icons/mic.png"));
     static public final ImageIcon zoomIn      = new ImageIcon(Icons.class.getResource("icons/zoom-in.png"));
     static public final ImageIcon zoomOut     = new ImageIcon(Icons.class.getResource("icons/zoom-out.png"));
+    static public final ImageIcon dollar      = new ImageIcon(Icons.class.getResource("icons/dollar.png"));
 }