If you have a bunch of F00-F95 mp3 folders with encrypted file names, put this in the same folder to build an unencrypted filename directory structure of files

ipod_recovery.rb

# To build music_log.txt
# ------------------------------------
# sudo apt-get install ffmpeg
# SAVEIFS=$IFS
# IFS=$(echo -en "\n\b")
# for file in `find . -iname "*.mp3"`;do echo "=========================="; echo $file; ffprobe $file 2>&1 | grep -A 12 'Metadata:'; done > music_log.txt

require 'awesome_print'
# require 'byebug'

songs = []
song = nil

def d(s)
  return 'Unknown' if s.nil?
  s.gsub!("'", "")
  s.gsub!("/", ":")
  s.gsub!('"','')
  s.gsub!('*', '')
  s.gsub!('[', '')
  s.gsub!(']', '')
  s
end

_artist = "artist          :"
_title  = "title           :"
_album  = "album           :"
_track  = "track           :"

data = File.open("music_log.txt") do |f|
  while (line = f.readline) != nil
    if line.index("=====")
      if !song.nil?
        directory = "transformed/#{d(song[:artist])}/#{d(song[:album])}"
        filename = "#{d(song[:track])} - #{d(song[:title])}"
        fullpath = "'#{directory}/#{filename}'"

        if  `ls -al #{fullpath} 2>&1`.index("No such file or directory")
          `mkdir -p "#{directory}"`
          original = song[:location]
          # byebug
          cmd = "cp \"#{original}\" #{fullpath}"
          puts cmd
          `#{cmd}`
          ap song
        end
      end
      song = {}
      songs << song
      song[:location] = f.readline.strip
      next
    elsif line.index(_artist)
      song[:artist] = line.split(_artist).last.strip
    elsif line.index(_title)
      title =  line.split(_title).last.strip
      song[:title] = title.index(".mp3") ? title : "#{title}.mp3"
    elsif line.index(_album)
      song[:album] =  line.split(_album).last.strip
    elsif line.index(_track)
      song[:track] =  line.split(_track).last.strip
    end

  end
end