Skype changes microphone settings

Hello,

first of all I want to thank for another great portable application.

I use portableapps on my home computer to keep the system clean.
I want to use a voice morphing program as standard microphone but every time I start skype it is changed back to a hardware microphone. This used to be no problem with the old tradtionally installed skype.
Is there a way to keep the settings? And yes - I have disallowed skype to change the audio settings.

Kind regards
Andreas Joebges