A Single-User License can be used to authorize the product(s) on one computer.

To get your license to run on more PCs, you can log in to Member Center at https://musicfab.org/member.htm with your account, click on the "License Authorizations" on the navigation pane, and then scroll down the page to choose a Multi-Computer License.

There are two options:
3-Computer License ($29.99)
5-Computer License ($49.99)