README.md

$ 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.

TheSIGnal.rb

# gem install rubygame
#
# Rubygame needs the SDL lib

require "rubygame"

Process.daemon

puts "Started as #{$$}"

song = Rubygame::Music.load(ARGV[0])
song.play

Signal.trap(:STOP) { song.pause }
Signal.trap(:CONT) { song.unpause }