something important in an Audio puter is it ought to run cool and quiet and the Athlon64 3000 or 3200 both run cool and you can do a Zahlman heatsink, a low speed,large 92mm case fan,rear mount and perhaps not this case and get low noise. I think an N force 3 mobo uses dual-channel ram, meaning 2 matched sticks,a pair of 512's would be more than enough. Creative Audigy's are only the way if games are important. M-Audio revolution at about $70 New Egg will out do that overpriced Audigy,Turtle Beach Catalina is nice,even less $ Other Cards fom M-audio,Terratec or Egosys under $200 can do some awesome stuff. I would opt for an aluminum case as they shed heat better and cool=quiet,you don't need huge-you got a CD a DVD and HDDs. A fan blowin ot the back is always best-for low noise-the front becomes the intake. Rathher than the giant $375 dollar HDD, get 2 smaller ones. For storage about 250gb is a lot,I'd go SATA and Seagates run a little quiter than most. I'd get a Western Raptor SATA to put the OS or OS's on,and all software. With the music files and software on seprate HD's each one's heads can be active doing there thing rather than needing to jump back and forth between the files and the software. Also if you have a major crash your music stash is safe on a seperate drive. Further I'd use Partition magic to further divide the space-you don't want to defrag a 500gig partition or even a 60gb partition. The Raptor HD runs at 10,000 rpm and it can add a lot to all sorts of performance. I am sure you could get a Raptor and a 250gb SATA storage drive for well under the price of the 500,you probably could even get a USB 2 external of another 80-120 gb