Here's a few pix of the upgrades I'm just completing now.

Main Tracking Room. Control room is behind the monitors and racks. Playback room is visible center right. Remote Studio is set up in the room behind you as you face the racks and monitors.

I just added the 4th monitor (top). My computer upgrades never work the first try, especially when I close up the box before testing. Until this time! The left monitor has dual inputs, fed by the main DAW, and a supporting PC I use for softsynths and video collaboration. The primary DAW is an i7 quad w 12GB RAM, running X1 Studio. I have X1 Producer, X2 producer and X2 Essential in boxes, but haven't decided what needs to be deployed exactly where yet. So far, it hasn't been a limitation.

Playback Room. The bigscreen is fed by the supporting PC in the tracking room, the Remote Studio, a BluRay and a DVD player, sat dish and Xbox. Audio feeds from the other rooms.

This is the Remote Studio, currently set up as an alternate mixing/mastering console. It runs off a laptop not pictured.

This is a little writing/practice/arranging studio I set up on a bookshelf platform. Its mobile, drives headphones or PC speakers, and is only connected to the LAN via Sneakernet (SDcard manual transfer). The Android platform has a ways to go when it comes to digital audio, so I use a Boss Micro BR for recording. The tablet however, makes a great source for MP3 playback and Youtube videos. Best of all, no matter who is here or what time it is, I am the only one who can hear it with the speakers off and phones on!
This is the main control room, up and running independently, and on the LAN, but the audio links are not yet in place. I am tripping over the snake I'm going to use, but up till this week, a new male kitten was getting fascinated by wirechewing everytime I attempted to thru-wall it, so it has been delayed. He had minor surgery on Monday, and only destroys things once or twice a day now, so I'll be finishing that project momentarily.
Both laptops float around. The left two screens are driven by the Video Editing PC, which also hosts the main file server for the LAN. The right two screens are driven by a PC which does double duty as a print server and internet access for Guests.
I got tired of Billgates haughteur, and instituted filesharing via a 1TB LAN cloud drive, which gets around the networking vagaries of Vista and Win 7 admirably. All told, there's around 10TB of file storage space available or in use.
Byte Me, Bill!
:-)