fairplay key was missing

src/NadekoBot/Resources/ResponseStrings.Designer.cs

@@ -3442,6 +3442,15 @@ namespace NadekoBot.Resources {
             }
         }
         
+        /// <summary>
+        ///    Looks up a localized string similar to fairplay.
+        /// </summary>
+        public static string music_fairplay {
+            get {
+                return ResourceManager.GetString("music_fairplay", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///    Looks up a localized string similar to Finished Song.
         /// </summary>

src/NadekoBot/Resources/ResponseStrings.resx

@@ -1350,6 +1350,9 @@ Don't forget to leave your discord name or id in the message.
   <data name="music_dir_queue_complete" xml:space="preserve">
     <value>Directory queue complete.</value>
   </data>
+  <data name="music_fairplay" xml:space="preserve">
+    <value>fairplay</value>
+  </data>
   <data name="music_finished_song" xml:space="preserve">
     <value>Finished Song</value>
   </data>