The Utility effect in Ableton Live is great when you want to automate volume, but it only goes down to -35 dB which often can make complete fadeouts impossible. This is where the Dmixer comes in. It recreates the mixer
It's been a while since I posted a video tutorial in the 'Ableton Live 9 Quick Tips' series. This one shows you a neat little trick for mixing. Instead of automating the track volume, you can use the Utility effect
Part 4 of the series "Ableton Live Insider Tips" explains how recorded automation curves can be changed in Live with the command ThinningAggressiveness in the Options.txt file.
Part 3 of the series "Ableton Live insider tips" deals with two other commands that you can add to the Options.txt file that will make working with VST plugins much easier. Particularly the automation of their parameters.
There are two kind of envelopes in Live, clip envelopes and automation envelopes. These can be added via MIDI controllers or drawing. Or a combination of both. To draw envelopes, you need to turn on the Draw Mode by either clicking