itunes_file_exploler.rb

#  (output sample)
# {"Library Tapes"=>
#   [{"A Summer Beneath The Trees"=>
#      ["01 The Sound Of Emptiness Part 1.m4p",
#       "02 Pieces Of Us Were Left On The Tracks....m4p",
#       "03 Above The Flood.m4p",
#       "04 A Summer Beneath The Trees.m4p",
#       "05 The Fragile Tide.m4p",
#       "06 The Modest Triumph.m4p",
#       "07 The Sound Of Emptiness Part 2.m4p",
#       "09 ...And The Rain Did Fall.m4p"]}]}]

require "pp"

base_dirs = [
  "/Users/yuto/Music/iTunes/iTunes\ Media/Music",
  "/Users/yuto/Music/iTunes/iTunes\ Media/Apple\ Music"
]
data = []

base_dirs.each do |base_dir|
  next unless Dir.exist? base_dir

  artist_dirs = Dir.glob("#{base_dir}/*")
  artist_dirs.each do |artist_dir|
    artist = artist_dir.split("/").last

    albums = []
    Dir.glob("#{artist_dir}/*").each do |album_dir|
      album = album_dir.split("/").last
      songs = Dir.glob("#{album_dir}/*").map{|song_path| song_path.split("/").last }
      albums << {"#{album}" => songs}
    end

    data << {"#{artist}" => albums }
  end
end


pp data