Building the Best "Used" Budget System under $3000

I've been reading several threads on all best equipment (most of it out of my price range). I'm convinced, for a music lover with a novice ear, that an affordable quality system can be assembled from "pre-owned" equipment. So, if you were building a COMPLETE system from the ground up for your best friend who was just getting started and only had a maximum of $3000 to spend, what would you recommend. This system is for the HiFi music lover only (no Home Theather) and should includes analog and CD. An expert would also consider the future need to upgrade once the "bug" takes over.