Added "keep" flag to songs, which will stop them being deleted.

src/main/java/moe/nekojimi/chords/Main.java

@@ -41,6 +41,8 @@ public class Main extends ListenerAdapter
     private final Searcher searcher;
     private JDA jda;
 
+    private VoiceChannel currentVoiceChannel = null;
+
     private List<Result> lastSearchResults;
 
     private int trackNumber = 1;
@@ -127,6 +129,8 @@ public class Main extends ListenerAdapter
 
             if (content.startsWith("!join "))
                 onJoinCommand(event, guild, arg);
+            else if (content.equals("!leave"))
+                onLeaveCommand(event);
             else if (content.equals("!join"))
                 onJoinCommand(event);
             else if (content.startsWith("!play "))
@@ -201,6 +205,15 @@ public class Main extends ListenerAdapter
         onConnecting(channel, textChannel);     // Let the user know, we were successful!
     }
 
+    private void onLeaveCommand(GuildMessageReceivedEvent event)
+    {
+        if (currentVoiceChannel != null)
+        {
+            disconnect();
+
+        }
+    }
+
     private void onPlayCommand(GuildMessageReceivedEvent event, Guild guild, String arg)
     {
         try
@@ -384,7 +397,9 @@ public class Main extends ListenerAdapter
     {
         String help = "Commands available:\n"
                 + "!join <Channel>       - Joins a voice channel\n"
+                + "!leave                - Leaves the current voice channel\n"
                 + "!play <URL>           - Downloads the track at that URL and adds it to the queue.\n"
+                + "!play <Search>        - Searches for a track and displays a selection menu.\n"
                 + "!queue                - Show the songs currently playing and the current queue.\n"
                 + "!remove <Index>       - Remove the song at position <Index> from the queue.\n"
                 + "!skip                 - Skip the current song and play the next one.\n"
@@ -442,6 +457,20 @@ public class Main extends ListenerAdapter
 //        audioManager.setReceivingHandler(handler);
         // Connect to the voice channel
         audioManager.openAudioConnection(channel);
+        currentVoiceChannel = channel;
+    }
+
+    private void disconnect()
+    {
+        if (currentVoiceChannel != null)
+        {
+            Guild guild = currentVoiceChannel.getGuild();
+            AudioManager audioManager = guild.getAudioManager();
+            audioManager.setSendingHandler(null);
+            audioManager.closeAudioConnection();
+            musicHandler = null;
+            currentVoiceChannel = null;
+        }
     }
 
 }

src/main/java/moe/nekojimi/chords/MusicHandler.java

@@ -95,7 +95,8 @@ public class MusicHandler implements AudioSendHandler, Closeable, Consumer<Song>
             }
             if (currentSong != null)
             {
-                currentSong.delete();
+                if (!currentSong.isKept())
+                    currentSong.delete();
                 currentSong = null;
             }
             currentSong = songQueue.poll();

src/main/java/moe/nekojimi/chords/Song.java

@@ -22,6 +22,7 @@ public class Song
 
     private String requestedBy;
     private String requestedIn;
+    private boolean kept = false;
 
     public Song(URL url)
     {
@@ -100,6 +101,16 @@ public class Song
         this.requestedIn = requestedIn;
     }
 
+    public boolean isKept()
+    {
+        return kept;
+    }
+
+    public void setKept(boolean kept)
+    {
+        this.kept = kept;
+    }
+
     @Override
     public String toString()
     {