Well they're compatible but it's way mis-managed and needs a lot of tweaking before it's perfected. You've got a terrible choice for motherboard and you're spending $200 for a case, unnecessary sound card, 2700K, and a server-grade PSU. Put that money you're spending there into getting a 680 or a 7970 and upgrade your motherboard. Also what's the reasoning behind 4TB of HD space? You'll most likely never use all that unless you're doing some hardcore video editing.
You also might want to fix your links - there's a lot of extra code in them.
This will be a home theater pc/gaming rig. I need the sound card for excellent quality 7.1 surround for my 3d projector/7.1 system. I need a lot of memory because i plan on storing massive quantities of media. I also plan on buying another gfx in the futre. i already have 16gb of ram to install
also why i5 over i7? i have an i5 like the one you suggested in my current pc, can i transfer that one to my new mobo? also is the 680 better than 2 570s?
You don't need it on an HTPC / Gaming rig as you're most likely not going to use anything that requires hyper threading - put that money in the GPU - that's where it really counts, especially if you're going to be hooking up your rig to any sort of LCD / LED. Media playback actually doesn't require a 2600K - you can get by with far less.