The build looks good
However the sound card is unnecessary - are you buying it from your friend? Or is he giving it you? If your buying it the money would be better spent on buying a slightly better GPU (6950 or GTX560Ti).
As said above, and I will recommend it, Hyper212+ CPU cooler will save you $20 or so
Oh yeah, my friend gave it to me for my birthday:D because i really love listenning to the music. And i got 3 headphones, so he bought it for me.
About the cooler
oh i c. thank you for ur advice. T__T But too late, i bought it already.
@ ComputerNugget : Thank alot computerNugget, it's the first time i build pc by myself .
so just want to make sure everything ok before i order all of those stuff.