GOautodial Open Source Omni-channel Contact Center Suite

Hi,

I would like to assign an audio file to an extension, such that when an agent would call that extension with a contact on the line, the recording would play, and then automatically hang up, leaving the contact and the agent still connected to continue their discussion? I presume the agent can choose Xfer, and then "Call with Client"?

The idea is that we're doing political fundraising, and we want to be able to play a recording of a 60 second radio ad to a potential contributor.

I know how to make the recording, and upload it, such that the goadmin facility can find it with the "audio chooser", but how do I assign the recording to an extension?

Thanks in advance for your help.