Needs a wiring harness, can't just put in an aftermarket stereo without re wiring the speakers etc.
That would be where you connect anything with a STEREO AUDIO OUTPUT.
It's probably the amp, either change it or replace the audio system
You sound card should have a audio in port.
Connect a audio cable from the Audio Out connectors on the cable box to the AUX In Audio connectors on the stereo receiver.
You will have to buy a pig tail at an audio store for the factory amp under neath the passanger side seat.
The easiest option in the world would be to visit Best Buy or a local car audio store and buy a wiring harness for your vehicle. They are typically priced between $15-25. It will connect directly to the factory harness and MOSTLY match up color for color on the end that wires up to the aftermarket stereo. If in doubt have a professional install it.
An Audio CD is a type of CD that has audio files on it that can be read by a CD player like a stereo
The audio outs should go to a AUDIO IN on your stereo system. You might need audio adapters to make the easy.
Some of the stores that sell Alpine Audio products are as follows, Best Buy, California Custom Stereo, Super Tint, Super Stereo, Audio Innovations of Fresno.
As you said if the file is stereo (as in left and right, two channels), you should route it to 2CH audio out
The purpose of an RCA cable or connector is to carry audio. It has a red connector for the right stereo channel and a white or black connector for the left stereo channel. One example of how an RCA audio cable could be used is to connect a CD player to other stereo equipment.
No