/r/buildapc has some great guides and an awesome community for helping to put together a nice rig. I really like this guide from Logical Increments that they have in their sidebar: http://www.logicalincrements.com/

Edit:

I'm by no means an expert, but these are some of the parts I'd pick if I were building my own custom rig:

CPU: The i7 4790 is almost the same price as the 4770, and has a bit of a performance boost (unless you plan to overclock; the 4770 has better overclock potential supposedly).

Motherboard: The ASUS Sabertooth Z87 is my personal dream mobo, but it seems like there is a newer version (Z97) available? Might need some research on that.

Memory: Can't go wrong with Kingston or Corsair. 16 or 32, as long as it's the right type for your mobo, you should be fine. I've got 8GB and haven't had any issues, but I don't record or encode anything. Depending on your budget, it may be worth it to go up to 32GB as it will future-proof the rig fairly well.

PSU: Again, this will depend on your other choices, but you're very unlikely to need more than 1000W, so the EVGA SuperNOVA 1000 is a nice option. Certified Platinum efficiency and modular.