twitunes.rb

require 'rubygems'
require 'tweetstream'
require 'open-uri'
require 'json'

tweetstream = TweetStream::Client.new("user", "pass")

tweetstream.track('♫') do |tweet|
  q = tweet.text.gsub(/[^a-z\s]/i, '')
  
  r = JSON.parse(open("http://ax.phobos.apple.com.edgesuite.net/WebObjects/MZStoreServices.woa/wa/itmsSearch?media=music&country=US&limit=1&output=json&term=#{URI.escape(q)}").read)
  
  r["results"].each do |result|
    puts "Artist: #{result['artistName']}"
    puts "Track: #{result['itemName']}"
    puts "Album: #{result['itemParentName']}"
    puts "Genre: #{result['primaryGenreName']}"
    puts "Tweet: #{tweet.text}"
    puts "---"
  end
end