My thought is to sidestep the impossible process of computing a value, by assigning a presumptive value, e.g., one dollar per copy. That way, everybody knows the score.<p>It&#x27;s my understanding that a per-use presumptive value is how performance rights for copyrighted songs are handled. If your band plays &quot;Freebird&quot; in a public venue that does not have a performance license, the liability is a certain fixed  amount regardless of the size of the audience, or how much beer got sold as a result of your performance.