Hello, my first post, maybe I should make an introduction page...I'll do that in a few, but anyway. So I've had a Carputer in my car for about three or four years now (I think actually RIGHT before Mp3Car.Com came around

) and I finally decided to get rid of my "old" LCD and go ahead and unpgrade to something fancy. So I did a quick search on eBay and about this...
eBay Link - TSP-716 LCD
GREAT deal, great LCD, got it working, touch-screen works fine, and the display is HELLUVA lot better than my lame composite-only LCD I just got rid of. So anyway, not really sure if this needs to be in THIS forum or in the audio forum, but I guess I'll just post this here and also in the audio forum and a mod can delete whichever one that needs to be deleted...
Anyway, to the problem. Audio! The LCD only has one set of RCA outputs and no speaker wire output. I was thinking I have two options..
1) Splice into RCA speaker cables that I have installed in the car already that of course are already run through my car.
2) Someone mentioned the idea of getting another head unit and splicing the speaker wires to that unit and then just run the input/output between that HU to the LCD.
What do you guys think? Is there another way? I haven't had a whole lot of time to fool with it (will tomorrow and Tuesday, my new offdays) as I had to work seven days this week. So what do you guys think?