[Freeswitch-users] Generating a BEEP tone

I want to be able to generate a beep tone as part of an announcement in a custom IVR that I am building. I can see where a beep is defined in vars.xml, but I am unsure as how I would get it into my announcement. I can also see that in several places a file beep.wav is invoked, but no such file exists on my system How do I use the beep variable? Where should the beep.wav file be located, and how/where would I get it from? Thanks for your time. William.