How to 'whisper' music using ChanSpy(), or any alternative?


I intend to ‘whisper’ music/message file to one of the conference participants without making this message audible to other conference participants. I went through Audio Manipulation chapter in Asterisk Cookbook- … 02347.html
but couldn’t figure out:

  1. How to implement ‘whisper’ music file to a participant of conference using ChanSpy?

  2. Is 'whisper’ing the music file using ChanSpy the best approach? Would you recommend, getting the user out of conference playing the message, and putting her back into the conference?

I would greatly appreciate your responses.