Arm_Track_Automation (Max For Live Device)

This device allowes you to automate the function Arm Track, which is by default not available in Ableton.

Drop the device in a track, right click on the button and click show automation. Then you can select when the automation is on and off during playback. Use new instances of the device on every track you want to do this. If you move the device from one track to another it will keep controlling the first one it was dropped on.