Customise linphone windows desktop version

Hi,

I need a windows pc softphone with following features.
1. SIP server information will be configurable through an API.
2. balance display through api.
3. Auto answer the incoming call
4. Play a sound file to other party after answering the call.
5. Option to add delete sound files.
6. Branding

Thanks
Vidhya Sagar Dixit