Pipe what is playing on spotify into a file for BUTT (broadcast using this tool)

currently_playing.rb

#!/usr/bin/env ruby
require 'rubygems'

# usage
# ./currently_playing.rb > currently_playing.txt

def osascript(script)
  system 'osascript', *script.split(/\n/).map { |line| ['-e', line] }.flatten
end

osascript <<-END
    on getCurrentTrack()
        tell application "Spotify"
            set currentArtist to artist of current track as string
            set currentTitle to name of current track as string
            return currentArtist & " - " & currentTitle
        end tell
    end getCurrentTrack
    getCurrentTrack()
END