No. That is piracy. If you are listening to the program for your own benefit, and you have a paid for copy, and they are exposed as a result of you using the program that you paid for for your own benefit, then you are within fair use rights, and you do not need to purchase anything.
If, on the other hand, you want one or more of them to have access to using it then you need to purchase as many copies as is necessary for them to use it outside those parameters.
For example, if you want to purchase it for dad, and dad always uses it while mom is around, then you only need his copy paid for in addition to your own. But if mom and dad want to use it while the other is not around, then they each need their own paid for copy.
Posted in: Using Subliminals