Question about Just Flight Traffic 2005

I've recently got Just Flight Traffic 2005. I must say it's pretty cool seeing realistic traffic at airports, even in correct proportion (like plenty of Aer Lingus planes at Dublin airport etc).

Anyways, one small thing I don't like is that when you aknowledge a radio signal you don't actually hear yourself aknowledging like in the pre-Traffic 2005 Flight Simulator. Is there any way to keep Traffic 2005 but be able to hear yourself aknowledge radio signals again?

Thanks a lot in advance for any help.