Recording meetme conference -- custom output

One of my users wants to record phone interviews for later editing into Podcasts. I set up a dedicated meetme conference that has recording turned on by default, and it successfully records the call. However, to make editing easier, the user would like separate wav files, preferably one for each participant, but if not, then at least for the incoming and outgoing sides of the call. I remember that separate files was once the default for Asterisk recording – to mix into one file we needed to specify an “m” switch. Can anyone point me to something in freepbx that I could tweak to return to the dual-track option, or (better!) do multi-track recording?

Thx

Jim Shilliday