Alright thats what I was looking for, thanks for the help!
Your Pioneer head unit support a IP bUs conecction then you will need to purchase a CDRB20 for it wich will provide you with an AUX input , then activate AUX on your head unit via the INITIAL SETTINGS MENU
thats it now you can rout the audio signal from your LAPTOP via a 3.5mm head phone jack to RCA stereo input on the PIONEER
NOW you can use the CAR stereo system: to control you LAPTOP /pc sound
:happy Wazza ( Pioneer)