GOOD NEWS: The Mac file for the Barffet Sound Re-Genarator is not missing! I was able to download and install the Mac OS version without issue, by using the download link. Curiously, there are no files or other information at the Astatic DSP developer site (astaticdsp.blogspot.com) other than a single blog post from April 2015 that says "Soon. VST ideas are brewing at the moment."
Curiouser and curiouser!
BAD NEWS: I suspect that the Barffet Sound Re-Genarator is not 64-bit, as it doesn't appear under PlugIns > Audio Units when I'm running Ableton Live v9.7.2 (64-bit) on a MacBook Pro (i7 2.2GHz) with OS X 10.10.5 Yosemite. If you have a 32-bit host, you may have better luck. You may not, but you might!
Finally - If anyone gets this running with a 64-bit host on Mac OS X, please reply and let me know!
Its more of a random generator then and effect sometimes depending on the settings. You need to feed it audio. When Nausea 1 is on its an random LFO that effects the Barffer Rate 1 and Nausea 2 a random LFO also for the Barffer Amount ect. The Gastric Acid Cells are the random seeds for the Baffer so you get new results from the Barffer. Bottom line just hit record and playground with everything so you will have some new samples to create with. Sorry about there not being presets that has to do with the Sonic Birth software which is dead now.