Noxn

$ ruby TheSIGnal.rb ~/untz-untz.ogg # start music deamon
Started as 13561 
$ kill -s SIGSTOP 13561 # pause
$ kill -s SIGCONT 13561 # unpause

Note left by Noxn: Not tested because I lack rubygame and dont want it on my vps.

Noxn

require 'rubygems'
require 'rack'

class Object
  def webapp
    class << self
       define_method :call do |env|
         func, *attrs = env['REQUEST_PATH'].split('/').reject(&:empty?)
         [200, {}, send(func, *attrs)]
       end