Entering your key, and moving to a new Mac.
You can activate at the welcome screen on first launch, or any time later in Backstage, under Account & License. Paste the license key from your purchase email, add the email you bought with, and activate. The key and email travel together.
A license covers a set number of computers. If you have run out of seats because of an old or wiped machine you can no longer reach, use Deactivate all other computers in Backstage. It frees every seat except the one you are on, so a dead laptop never strands your license.
If you are on Pro and want unlimited artist profiles, you do not buy the app again. In Account & License, choose Upgrade to Road Warrior and pay only the difference. Already bought the upgrade key? Paste it into the upgrade field on that same tab. The upgrade rides on top of your Pro license, so keep both active. Your library carries straight over.
If activation ever fails with a connection error, see Troubleshooting.
Setcraft is a Mac app for working musicians: build setlists, print them big enough to read from the kit, and keep every song your band plays in one place. Download it free for 30 days.