a port of wotlisten to use the RSS feed rather than screen-scrape

wotlisten.rb

#!/usr/bin/env ruby -KU

# ported to use the RSS feed rather than screen-scrape

require 'rubygems'
require 'open-uri'
require 'rexml/document'
require 'rexml/xpath'

if ARGV[0]
  user = ARGV[0]
  url = "http://ws.audioscrobbler.com/1.0/user/#{user}/recenttracks.rss"
  doc = REXML::Document.new(open(url))

  track = REXML::XPath.first(doc, "/rss/channel/item/title").text
  puts track

  puts "#{user} is listening to #{track}"
else
  puts "Wotlisten tells you what a last.fm short username is listening to (or most recently listened to)"
  puts "Usage: wotlisten.rb username"
end