Audio Systems: Connecting laptop to RF head thru changer, stereo head unit, fm modulators

Question
I have about 60gb of music on my laptop that I'd like to be able to listen to, and no, I'm not getting an ipod (because I know there are hundreds of ipod connection kits out there), I simply don't have the money (poor college student). Also, I'm an electrical and computer engineering major, so a little wiring and sodiering (if needed) is no big deal. I've thought about those fm modulators, but a buddy of mine lent me his, and the quality left much to be desired. The other option possibly would be to wire the front and rear outputs of my extigy straight into the speakers, then mount a switch on the dash to switch between the two, would this be any easier? I just don't know where I'd find an 8-pole switch.

Thanks,
Corey

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Followup To
Question -
Okay, here's the situation: I'd like to connect my laptop to my Rockford Fosgate RFX8220's cd changer input (I don't even own the changer or else I could get the info I need off it). I have found the wiring diagram, here's the pins:

1 (R) CH
2 CD ON
3 BUS
4 B+
5 M. Ground
6 NC
7 (L) CH
8 A. Ground

First off, I'd like to know if I should use the master or aux ground (I assume this is what M/A stand for), and secondly, how do I fool the head unit into thinking the cd changer is hooked up?

Thanks,
Corey
Answer -
Corey,
Give me some more details about why you want to connect your laptop to your stereo. This way I can tell you if it's feasible.

TOM,
T&D ELECTRONICS
tdeser@zoominternet.net

Answer
Corey,
The three terminals that you will need to connect your laptop audio output to are, #1 right audio, #7 left audio and #8 audio ground. With the audio inputs connected the laptop output may work when you press the CD button on the stereo/head unit. You may be able to purchase an 8 pin plug at Radio Shack to plug into the jack on the rear of the stereo. (M=main ground for power and digital buss)


TOM,
T&D ELECTRONICS
tdeser@zoominternet.net