I use it for gaming for now, and toying with Linux. I plan to upgrade as necessary to use it for audio production. It uses my 27" iMac (2009) as a monitor, and I have a USB switch for the keyboard (different mice).
Everythng was bought from Newegg except custom parts and $0 parts.
The mobo was actually 160, but I got a $60 combo deal w/the CPU.
I got Windows 7 a while back, and I have the HD from an old external drive.
Metro came with the video card.