Improve Vehicle Music Handling

[MysteryMan_23]

I want to make it so that:

A. The vehicle music doesn't stop playing when you change maps.
B. When you exit the vehicle, the map's auto-music plays.

Anyone know how to do this?

EDIT: I tried to do it on my own, but I keep getting this error when I try to land:

Script 'Vehicle Music Improvement' line 58: NoMethodError occurred.

undefined method ` autoplay_bgm' for nil:NilClass

Here's the script:

#==============================================================================
# ** Vehicle Music Improvement
#------------------------------------------------------------------------------
# By: MysteryMan23
# Version 1.0
# Date: 3/21/08
#
# This script makes it so that the vehicle music doesn't stop playing when you 
# change maps, and also makes it so that when you leave the vehicle, the map's 
# autoplay music plays if it has any; else, it will just play the memorized 
# music.
#
# To use: put in the materials section above Main.
#==============================================================================

class Scene_Map
  #--------------------------------------------------------------------------
  # * Player Transfer  Processing
  #--------------------------------------------------------------------------
  def update_transfer_player
    return unless $game_player.transfer?
    fade = (Graphics.brightness > 0)
    fadeout(30) if fade
    @spriteset.dispose              # Dispose of sprite set
    $game_player.perform_transfer   # Execute player transfer
    $game_map.autoplay if ($game_player.vehicle_type == -1)
    $game_map.update
    Graphics.wait(15)
    @spriteset = Spriteset_Map.new  # Recreate sprite set
    fadein(30) if fade
    Input.update
  end
end

class Game_Player
  #--------------------------------------------------------------------------
  # * Get Off Vehicle
  #    Assumes that the player is currently riding in a vehicle.
  #--------------------------------------------------------------------------
  def get_off_vehicle
    if in_airship?                                # Airship
      return unless airship_land_ok?(@x, @y)      # Can't land?
    else                                          # Boat/ship
      front_x = $game_map.x_with_direction(@x, @direction)
      front_y = $game_map.y_with_direction(@y, @direction)
      return unless can_walk?(front_x, front_y)   # Can't touch land?
    end
    $game_map.vehicles[@vehicle_type].get_off     # Get off processing
    if in_airship?                                # Airship
      @direction = 2                              # Face down
    else                                          # Boat/ship
      force_move_forward                          # Move one step forward
      @transparent = false                        # Remove transparency
    end
    @vehicle_getting_off = true                   # Start getting off operation
    @move_speed = 4                               # Return move speed
    @through = false                              # Passage OFF
    if @map.autoplay_bgm                          # Map has auto BGM
      game_map_autoplay                           # Autoplay
    else
      @walking_bgm.play                           # Restore walking BGM
    end
    make_encounter_count                          # Initialize encounter
  end
end

I DO plan on releasing this script later, by the way.  Could someone help me out here?

 

[MysteryMan_23]

Bump!