Unlike most of the docks, AirPlay speakers, and TVs tuned to satellite radio that many of us use to listen to music, a component stereo system plays songs the way artists meant for them to be heard: clear and full, with a depth that makes listening to an album feel like being at a concert. Your Macklemore bootlegs will sound better than ever. But first, an important step: Prepare yourself. You cannot become an audiophile, even a moderate one, without opening your wallet. Nope, wider. But there is some hope. While a top-of-the-line stereo can easily run you more than $100,000, Christopher Hansen, co-owner of Simply Home Entertainment in Beverly Hills, says you can assemble an excellent system for around $4,000 (see next page). Or $13,000 (below) if you're feeling…