Ableton just announced they are resetting all trial versions. So if you’ve installed the trial before and it expired, you can now install it again and get another 30-day trial with no limits or disabled features.
According to Ableton:
“With support for The Bridge and the addition of Amp, the premium amp- and cabinet-modeler, recent updates to Ableton Live have seen a whole new world of possibilities. To allow everyone to try out these new features, we’re resetting the trial versions for all users…”
Get your free trial here: http://www.ableton.com/nl759-free-trial