I think the rule is that you can have it installed on more than one computer but not running simultaneously. I'm finding that I want an additional license because lately I've been wanting to open two separate computers and run sonar on both. Anyone know what an additional license would cost? I can't see anything online.

I only run one at a time. Seems like someone at Cakewalk here replied once that they built in the factor that a lot of people have a desk top and a laptop and would like to use it on both.