Convert music files

music_converter.rb

#!/usr/bin/ruby

require 'rubygems'

dir = ARGV.first

unless dir
  puts "must supply a directory" unless dir
  puts "USAGE:"
  puts "music_convert directory"
  exit 1
end

dir = "#{dir}/**/*.wma".gsub('//','/')

Dir[dir].each do |file|
  destination = file.gsub(/\.wma$/, '.mp3')

  unless File.exists? destination
    puts "ffmpeg -i '#{file}' '#{destination}'"
    system "ffmpeg -i '#{file}' '#{destination}'"
  end
end

Want to know how to convert Spotify music to mp3: https://musicfab.org/convert-spotify-to-mp3