Hi ,
You don't need any additional software , Voxal is capable of doing that. If you have multiple audio devices connected to your computer, you may need to manually choose your configuration to achieve what you want:
Open Options which is under the Voice menu.
From the list of items in Preview Recording Devices, choos the microphone you would like to use. That could be your headset, computer's integrated microphone, or any other microphone detected by Voxal.
From the list of items in Preview Playback Devices, you will need to choose the audio output of your computer. This can be named similar to your sound card such as Realtek, Intel etc.
Please let us know if you can't find the device listed there.
Regards,
Yusuf