Ok, here we go:
CPU: AMD Athlon 64 Socket 939 3000+, 3200+, or 3500+, Winchester. Speed is up to you, but they pretty much all run the same, I say go with the 3200+.
Mobo: Asus A8V-Deluxe nForce3. Best motherboard when not overclocking, period. Stable as hell. I'd definately pick this over the MSI in terms of stability, the MSI is actually really unstable.
RAM: 1, ONE, GB of DDR400 (PC3200) Crucial, Corsair, OCZ, or Mushkin Valueram. You really don't need anything special such as XMS or Ballistix, and you absolutely do not need more than 1GB.
Video card: BFG 6800GT OC. Actually, PCavailable has the Ultra in stock for a very nice price, get that for now but as soon as they go out of stock (2 days?), the 6800GT is a great card. You can get the single-fan model for about 400.
Sound card: Soundblaster Audigy2 ZS
Speakers: Depends on what kind of setup you want. For 2.1, Klipsch Promedia. For 5.1, definately the Logitech X-530s. For 7.1, I'd have to say the Creative Inspire T7700s, although I've never tried them myself, they're really cheap (92 bucks) and everyone else loves em.
HDD: You have well, a bit too many there. I would just get: 34GB Raptor SATA for OS, 80GB SATA for gaming, 200GB SATA for video and general storage. Seagate makes the best hard drives.
PSU: Nice. That's all I have to say.
DVD Burner: How much burning will you be doing? NEC's DVD+-RW Dual Layer is great for normal use, if you do excessive burning, get something a bit higher quality like Pioneer or Plextor.
Other optical drives: You really need 4?? Two is more than enough...
Monitor: Dell 1905FP. If you want something a bit cheaper LG, BenQ, and ViewSonic make nicely priced LCD monitors.
Keyboard: I have the Logitech Elite keyboard, has a LOT of buttons and hotkeys, and is really nice. I heard that the Saitek gaming keyboard is really nice but kinda expensive at 50 bucks. I really don't care what kind of keyboard I use though, as long as it works.
Makes sure you have other misc hardware such as fans, heatsink for the CPU, thermal paste, etc etc.