Well, I guess if you want your hob-snobbery of a sound system (God forbid you get a little crackle in your system), you could always do what I did to one of my SC's:
1) Rip out your entire stock sound system (Nachamicwhatever is <censored> crap anyways)
2) Write a really large check to Cerwin-Vega, Infinity, etc. for real metal-coned tweeters and subs
3) Make custom boxes and mounts for your new speakers. I recommend a dremmel tool.
4) Write another large check to Cerwin-Vega for a V12 six channel amp
5) Install the amp under the front seat (difficult) or in the trunk (even more difficult). I did the latter
6) Get a Y-Plug (i.e. RCA to mini-jack) and connect it straight up to your MP3 player (this setup is headless (i.e. no radio/CD control... just iPod)).
Oh, and while you're at it, don't listen to MP3s... there quality is crap. Use AIFF or Lossless.
This entire process cost me around $3,000 and about twenty hours of good, hard work (and I'm and electrical engineer).
... or you could just be satisfied with a cheap (~$10.00) tape adaptor.
You be the judge: are you an audiophile or a user?
P.S. You can also replace $3,000 with $5,000 to have someone else do it for you.