Hello everyone! This is my first post and even my first forum that I've joined but I keep coming here for answers but now Im completely stuck.

I have a used 1999 Infiniti I30 with stock Bose HU and speaker system and I dont have or plan on getting an amp (Im on the brink of my budget -set by the girlfriend lol) . I have done everything (it seems) except figure out a way to integrate my computer sound into my stereo sound. The computer is an Acer Aspire One.

I would like to utilize the headphone port on the computer. My biggest problem is that I have NO idea about any of the plugs that go into the HU! This is my first project and I cant find a schematic or breakdown anywhere on the net so I can't even start to really hypothesize. I know nothing about car audio so no response can be considered TOO dumbed down or basic.

Just to give an idea of where I am:
The first pick is the mount of where the screen will go, The second is the mount with the screen in, and the third is just there to show the stock radio.

Thanks
Russ