Eventide installation.

Go to eventideaudio.com and click Log In at the top of the page. You will see an Eventide Login box asking for a username or email address and a password. If you have never had an Eventide account, click Create An Account under the Sign In button — it is free and takes a minute. Use an email address you actually check.

Once logged in, open My Account and choose Register Products. Type the code from your licence email into the License Key box exactly as printed — three groups of letters and numbers joined by dashes, like A1B2-C3D4-E5F6. The form also asks for your iLok account. If you do not have one yet, you can create it right there on the registration page; if you do, enter your existing iLok username so the licence lands in the account you already use.

Each Eventide plug-in has its own installer. Open the Downloads page, find your plug-in, and pick the installer for your computer — Mac or Windows.

Open the file you downloaded and follow the prompts. Say yes to what it suggests — the standard choices are right for almost everyone. The installer also puts the iLok licensing components on your computer; you do not need to install anything from iLok separately for an Eventide plug-in.

Start the music program you use — Logic Pro, Ableton Live, Pro Tools, Cubase, FL Studio, any of them — and open the plug-in on a track. The first time it loads, an activation window appears. Enter your iLok username and password — the iLok login from step 2, not your Eventide login and not the code from your licence email — then choose where to activate: this computer or an iLok USB key if you have one. You can activate each licence in two places at once.