iirc, wmm used to be integrated into cfw, but it was voted to be removed from it, because not everyone used it. I personally love it, but if people want it to be separate, I'd imagine they'd vote that way with hen as well. I don't know the specifics, but I'll tag @aldostools .
I have a permanent link for the update version. It could work on a clean install, but it doesn't install all the needed files, only the new ones. http://ps3.aldostools.org/webMAN_MOD_latest.pkg