asterisk users - Jul 2005 - announce to caller in queues (asterisk for art!)

I have created a phone system for a rather unorthodox purpose.  We are  
making a 30 minute show that consists of callers calling in and giving  
20-30 second reports from around their city.  The calls are  
automatically answered by FireFly from an asterisk queue and the sound  
goes straight out to speakers.

What I would really love to be able to do is play a sound for the  
caller only when Firefly picks up their call.  That way they'll know  
that its their turn to speak.  Currently, we tell people to start their  
report when the hold music stops, which is not as clear as we'd like.   
The only thing I have found is Queue()'s "announceoverride", which
plays an soundfile for the queue member/agent when the call is picked  
up, but that's the opposite of what we need.

Here's the website for the event if anyone is interested:

http://whitmanlocalreport.net

.hc


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