/// <summary>
        /// Plays a sound to all mobiles within 20 tiles of the NPC emitting it
        /// </summary>
        /// <param name="m">The NPC producing the sound</param>
        /// <param name="sound">The sound to play</param>
        public void PlaySound(ChessMobile m, int sound)
        {
            if (m == null)
            {
                return;
            }

            Server.Network.Packet p = new Server.Network.PlaySound(sound, m.Location);

            foreach (Server.Network.NetState state in m.GetClientsInRange(20))
            {
                if (state.Mobile.CanSee(m))
                {
                    state.Send(p);
                }
            }
        }
		/// <summary>
		/// Plays a sound to all mobiles within 20 tiles of the NPC emitting it
		/// </summary>
		/// <param name="m">The NPC producing the sound</param>
		/// <param name="sound">The sound to play</param>
		public void PlaySound( ChessMobile m, int sound )
		{
			if ( m == null )
				return;

			Server.Network.Packet p = new Server.Network.PlaySound( sound, m.Location );

			foreach( Server.Network.NetState state in m.GetClientsInRange( 20 ) )
			{
				if ( state.Mobile.CanSee( m ) )
					state.Send( p );
			}
		}