Player-specific playback of jukebox records.

PlayerPlayback.java

package com.comphenix.example;

import org.bukkit.Location;
import org.bukkit.Material;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerChangedWorldEvent;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.util.BlockVector;
import org.bukkit.util.Vector;

import com.google.common.collect.MapMaker;

import java.util.Map;

public class PlayerPlayback extends JavaPlugin implements Listener {
    private Map<Player, Vector> sounds = new MapMaker().weakKeys().makeMap();

    @Override
    public void onEnable() {
        getServer().getPluginManager().registerEvents(this, this);
    }
    
    @Override
    public boolean onCommand(CommandSender sender, Command command, String label, String[] args) {
        if (sender instanceof Player) {
            Player player = (Player) sender;
            Vector playing = sounds.get(player);
            
            if (playing == null) {
                sounds.put(player, playing = player.getLocation().toVector());
                playRecord(player, playing, Material.RECORD_10);
            } else {
                sounds.remove(player);
                playRecord(player, playing, null);
            }
        }
        return true;
    }
    
    @EventHandler
    public void onPlayerChangedWorldEvent(PlayerChangedWorldEvent e) {
        // This will reset the playback
        sounds.remove(e.getPlayer());
    }
    
    public void playRecord(Player player, Vector loc, Material record) {
        WrapperPlayServerWorldEvent event = new WrapperPlayServerWorldEvent();
        event.setData(record != null ? record.getId() : 0);
        event.setEffectId(WrapperPlayServerWorldEvent.SoundEffects.PLAY_MUSIC_DISK);
        event.setX(loc.getBlockX());
        event.setY(loc.getBlockY());
        event.setZ(loc.getBlockZ());
        event.sendPacket(player);
    }
}

Copy in WrapperPlayServerWorldEvent and AbstractPacket from PacketWrapper.