What exactly do I need?

[Cookson]

So, what exactly do I need to experience great sound quality? What needs to be hooked up to the blu ray player?

I kind of have the idea, but just need to get a "check up". So, I THINK I need a Receiver to go along with speakers(Center, 2 front, 2 rear).

I'd say my spending limit is $600. Probably will get stuff from Best Buy... so refer to products they have. Thx.