gistfile1.txt

#!/usr/bin/env ruby

# Takes a directory and turns music in it to mp3s; deleting originals.

require 'find'
require 'fileutils'

# Find files
files = []
Find.find(ARGV.first) do |file|
  if file =~ /\.(aac|mp4|m4a|wma|m4p|ogg|flac|wav)$/
    files << file
  end
end

# Previous runs might have got somewhere
remaining = files.reject do |f|
  File.exists?(f.sub(/\.[^\.]+$/, '.mp3'))
end

exit if files.empty?

# Convert
unless remaining.empty?
  puts ['parallel', "soundconverter", "-b", "-m", "audio/mpeg", "-s", ".mp3",
        ':::', *remaining].join(" ")
  system('parallel', "soundconverter", "-b", "-m", "audio/mpeg", "-s", ".mp3",
         ':::', *remaining)
  if $? != 0
    puts "Encountered errors; not deleting anything"
    exit!
  end
end

# Delete
puts "Deleting files"
files.each do |file|
  File.delete file
end
puts "Done."