Thanks for this. I started looking at FreeFone last night, but saw your post this morning. I am asking this out of ignorance - are you trying to solve the problem of not being able to use the CarPC's spearkers/microphone for the phone call? Sounds like it is a Sony Ericsson quirk? If so, then I am on board here. I can connect to my W600i using the Serial connection for phone book and dialing, but can't find a way to use the CarPC as a bluetooth audio headset.
So, I tried YAPC with the following config.ini:
I checked to make sure FreeFone worked with same settings. YAPC throws an error when launching. Here's the error screen and the text when you click on details. Thanks for your effort.