Since version 1.8, AbleSet has a Count-In feature which allows you to start playback of sections a few bars before the section starts. This is helpful for practice situations where you want to work on a specific section.
The menu allows you to choose between a 1-bar, 2-bar, or 4-bar count-in. You can also choose to solo the click track during the count-in. AbleSet will look for the first track or group that contains "click" as the click track.
For count-in to work reliably in versions of Live older than 11.1.5, make sure that you set Live's grid size to a fixed "1 bar" or lower. Otherwise, AbleSet will not be able to correctly position the playhead, and you'll get a warning message.