Send Audio to another destination (similar to ChanSPY)

Hi,

Is there a way to make asterisk send the audio stream (both in and out) to another number or destination.
Something like ChanSPY but automatic.

Scenario:
If a call is established between two numbers, the audio stream of that channel is sent to another number also. This other number or destination only listen the call.

Is there any module in asterisk that can make something similar?

Thanks.

To complement:
In ChanSPY, to listen to the channel it is necessary to perform some sort of action.
I want this to be automatic.
If some number recives or makes a call, a copy of the sound stream is sent to another number or destination.

Thanks.

Did you find solution? I am also interested to have mentioned funcionallity. Anybody else have sollution?