For when there are a lot of mp3s on a web page

mp3scrape.rb

#!/usr/bin/env ruby

require 'rubygems'
require 'rest_client'
require 'nokogiri'

USER_AGENT = "Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_5; en-US) AppleWebKit/534.10 (KHTML, like Gecko) Chrome/8.0.552.231 Safari/534.10"

def filename(url)
  URI::parse(url).path.gsub(/^.+\/(.+)$/,'\1')
end

if !ARGV[0] || ARGV[0] == "-h" || ARGV[0] == "--help"
  puts "== Usage: mp3scrape <URL>"
  exit 1
end

html = Nokogiri::HTML(RestClient.get(ARGV[0]))
mp3s = html.css("a").select {|q| 
  q if q.attr("href") && q.attr("href").match(/\.mp3$/) 
}.collect {|q| 
  q.attr("href")
}

if mp3s.size < 1
  raise "no MP3s found!"
end

mp3s.each_with_index do |url,idx|
  puts "== [#{idx + 1}/#{mp3s.size}] #{url}"
  `cd /tmp && curl "#{url}" -O -# -A "#{USER_AGENT}"`
  `cd /tmp && open -a iTunes #{filename(url)}`
end

puts "== cleaning up"
sleep 2

mp3s.each do |url|
  `cd /tmp && rm -rf #{filename(url)}`
end