[Freeswitch-users] play wav files, or speak prompts, into recording?

[Wes]

Not sure how to phrase this correctly, which is why I'm having trouble 
searching for help on the internet.

I'd like to "speak" some audio into the recording that I am making of 
the user's voice.

For example, say I have the caller press some digits and then detect the 
digits that have been pressed, then, I can easily speak those digits 
back to them for confirmation, but what I'd really like to do is begin 
recording the call, and then speak those digits, or any other 
introductory message into the recording before they start speaking their 
message.

Say they type in the digits 123, then I'd read into the recording:  "The 
following is the dictation for user number 123, taken on July 3, 2011", 
and then the person would start speaking and the recording would continue.

Perhaps this would have to be done by some sort of post processing, 
where I append the introductory message onto the user's recording using 
sox, but I'd still like to use the voice system in freeswitch because it 
is good at reading numbers, speaking time, etc.

Thanks.