Dan Kirkhus demonstrates using Ableton Live with a handful of LFO type wav files to modulate external analog gear:

(if you’re not interested in the “how” and just want to see the frostwave spaz out, jump to 3:30 or so.) this stuff *only* works with MOTU audio interfaces (see: volta). this is an easy and free way to send beat-synced LFOs to your outboard modular gear; moogerfoogers, sherman filterbank, little phatty… anything with a CV input.

i recommend setting the warp method to “Re-Pitch” to keep LFOs smooth at extreme BPMs. or don’t… and get cool glitches.

You can download Dan’s LFO files here – but don’t blow your monitors with them!