I've upgraded the ram to 8 gb (the max) and added Amara HiFi, which is a VERY nice upgrade over standard iTunes. It's got a 320 gb hard drive and all the usual connections, USB, Firewire, Ethernet, etc. Has OS 10.6.8 installed, which is my favorite. This model still has the external power supply, so it's easily upgradeable.
Not much else to say. Feel free to ask questions.
Asking $450 or best offer
I also have a Musical Fidelity V-Link 192 that I'm selling and would be willing to make a package deal.
Photos can be seen on Audiogon
http://app.audiogon.com/listings/transports-apple-mac-mini-late-2009-core-2-duo-8-gb-ram-2013-10-04-digital-48393#yspPMyv5QrmwHwCQ.99