OK..i originally was going to use a usb sound card to split it but i came across several problems....

I wound up do exactly that...1/8th mini Y cable to RCA, then I used an EQ to split the signals to the 2 amps.
1channel in ... front/rear/sub out from the EQ.

The remote wire came from the Carnetix P1900 powers supply...www.carnetix.com

The sound quality was beautiful..Sound was nice and crisp and clean...then again it was coming out of a mac so i didn't need any additional sound cards as you would need with a PC.

I recently had an accident but I have all the pieces to reinstall in my new ride when i get it. see link below my SIG or the post above.

 

Yeah, I read about your accident on other posts, i am sorry to hear about you loss. Thanks for the info, it helps out tremendously. My friend that is helping me put this together is an electrical engineer and builds computers on the side, so i am sure he can help me out with all of my sound card needs. Thanks again G. and good luck with acquiring a new ride, glad to see you turned out ok after the wreck.

 

be sure to check out www.mp3car.com...tons of info there