Futility is a simple, but handy utility Max for Live device that allows you to quickly mute, solo, arm or collapse the selected track. You can also unsolo, unmute and unarm any soloed, muted, or armed tracks at once.
There's a few hidden features for tracks that not many people are aware of. All of them can be very handy for keeping track (see what I did there?) of where's what and help with the workflow.
In Ableton Live, you can only have one Live Set open at any given time. So what if you want to merge two or more Live Sets or use parts of one in another Set? This can be necessary if