Stereo questions...

Yes, FM modulator thing you tune to a preset station . It plugs into the antenna iirr. if you have rca even better.

It has RCA outputs. Which brings up yet another question. It's a four channel radio. It has both high and low level (RCA) outputs. BUT, it only had TWO RCA outputs VS four high level. What's the deal there? Can I somehow convert it to a four RCA output? Or do I need to? It seems if I use an amp then I wouldn't have front to rear fader ability with only two RCA outputs.