class Player
  def liquidsoap
    pid = fork do
      Signal.trap("HUP") { exit }
      Process.spawn "cd ~/Pulpit; liquidsoap serwer.liq"
    end
    Process.kill("HUP", pid)
    Process.wait
  end
  def mplayer
    pid_2 = fork do
      Signal.trap("HUP") { exit }
      Process.spawn "mplayer http://127.0.0.1:8000/stream.ogg"
    end
    Process.kill("HUP", pid_2)
    Process.wait
  end
  def pavucontrol
    pid_3 = fork do
      Signal.trap("HUP") { exit }
      Process.spawn "pavucontrol"
    end
    Process.kill("HUP", pid_3)
    Process.wait
  end
end

run = Player.new
run.liquidsoap
run.mplayer
run.pavucontrol

at_exit {
  exec("killall liquidsoap; killall mplayer; killall pavucontrol")
  puts "Zdechły"
}