Are there any free internet tv sites that I can run through windows media center?

[armysgt1]

Or a paid software that I don't need a tv tuner with

 

[canivari]

Or a paid software that I don't need a tv tuner with

Have you tried MediaPortal (it works like media center and supports much more stuff then Media center and with it you can add plug ins to run websites to watch TV
You can download it from here (its freeware):
http://www.team-mediaportal.com/download.html
Hope that helps

 

[CarlC]

I think white rat tv works,though i haven`t used it in ages.