asterisk users - Feb 2008 - Changing the automon output filename

Hi list,

The default automon (touch monitor) output file name format is:

    auto-epoch-caller-callee.wav

A variable is available to modify the second half:

    auto-epoch-${TOUCH_MONITOR}.wav

But, I can't modify the first half, 'auto-epoch-', with any
variables
that I know of, including ${MONITOR_FILENAME}. I want to immediately  
convert this output file to mp3, e.g. with ${MONITOR_EXEC_ARGS}, but I  
can't because it's impossible to predict a file name that includes an  
epoch number.

Can anyone help?

Thanks,

Jaap