To address a couple questions:
As of right now I don't have AM/FM. I'm not using the headunit at all, and I didn't buy a radio tuner for the PC, because I don't listen to FM anymore anyway. There's no good stations in my area, so I never hear what I want.
I plan to get Sirius Satelite radio some time, but for now I'm content with my extensive MP3 collection.
Most everything laying there on the floor is the stock crap that's getting thrown out. I got a nice set of Infinity Kappa's for the front from a member here. As I relisten to my playlists I'm amazed at how much I've been missing with stock speakers, the music is so much more vibrant and "full". It's like the transition from having your desktop at 256 colors then 32bit.
The program (aka frontend) I have running is RoadRunner, with a skin called
RR5K, made by a guy on mp3car.com.
And as far as theft concerns, for now I'm just throwing a old shirt over it. But later this week I'm having the windows tinted, and it sits low enough I doubt it will be very visible at all. Even with no tint you have to do a double take to notice it. By the end of the year I'll have a car alarm installed, the one I'm looking at has a pager that works up to 1/4 mile (IIRC) so if some crackhead does try to break in I'll come running and break him in.