Are you, or will be, running Windows 8 Pro? Well if you are you can get a free product code for Media Center.
From the Microsoft site:
Add Windows Media Center to Windows 8 Pro
If your PC is running Windows 8 Pro and you’d like to get Windows 8 Media Center Pack so you can watch and record live TV with Windows Media Center, you can take advantage of the following special offer:
For a limited time, get Windows 8 Media Center Pack for free **
To receive a free product key and get Windows 8 Media Center Pack, provide a valid email address in the space provided. Once you receive your free product key through the email address you provided, follow the instructions for adding Windows 8 Media Center Pack that appear later on this page.
Use this link to get your free product code for Windows 8 Media Center