Not sure if this matters, but this is my build:
CPU Intel Core i5-3570K 3.4GHz Quad-Core
CPU Cooler Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing
Motherboard ASRock Z77 Extreme4 ATX LGA1155
Memory Corsair Vengeance 8GB (2 x 4GB) DDR3-1600
Video Card XFX Radeon HD 7970 GHz Edition 3GB
Case Zalman Z11 Plus ATX Mid Tower
Power Supply Rosewill 750W ATX12V / EPS12V
Optical Drive Lite-On iHAS124-04 DVD/CD Writer
Case Fan Apevia CF14SL-BBL 59.6 CFM 140mm
Operating System Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit)
HDD Samsung Desktop Class Spinpoint F3 1 TB SATA 3.0gb/s 32 MB Cache 3.5"
I love music, especially DnB (Neurofunk and Jump Up), some Dubstep, and Electro House.
I noticed with the higher quality items, I can greatly tell the difference between music especially Neurofunk. I will be gaming also.
Should I include a sound card (even though the motherboard comes with an onboard one)? Which one should I get? I would be glad if someone pointed out a decent one for $50 or less if I should get it.
You'll need good speakers or headphones to appreciate the higher quality sound, but if you're discriminating enough a sound card will produce noticeably cleaner sound. ASUS sound cards are great and they have low-cost options.