This is just a simple utility that makes my life a little bit easier, and maybe it will do the same for you.
You set a master tempo, and then there are three LFOs whose period you specify in beats. What makes it a bit special is that there are four outputs, each of which are function bidules which take the three oscillators as x, y, and z inputs.
http://subnaught.org/bidule/SuperLFO.bgrp
