This plugin needs a Sony Ericsson Liveview device pared with your Android Phone. It also needs tha CarUI or CarUI Lite application installed.
CarUI provides you fast access while in your car to GPS navigator, music, Phone dialer and other applications. You can select any application installed in the device for each button.
This plugin allows you to launch CarUI and swich between the different apps from your LiveView device that you can have fixed to the steering wheel, etc.
Please write me to firstname.lastname@example.org if you have any problem. Don't do negative coments for this reason: I can help you to solve the issue and you can help me to improve the app.