AGI Playback on another Channel


I have a system where two calls are placed using .call files which run through and AGI script. I am storing the channel name in a mysql database so at all times i know the two channels that are up. What i am wondering is, is it possible for me to get the agi script for one call to play audio on the other.

something like:


I dont think playback could do it but wondering is there anything else that could?

Thanks for any help.