PC/USB RGB LED controller?

[Tengis]

Looking for something that will allow me to control my RGB LED strips from a PC. Ive done some googling and the only thing that really comes up is a few DIY projects:

http://circuit-zone.com/?electronic_project=439

http://www.instructables.com/id/24-Channel-USB-Connected-LED-Controller-upto-1A-p/

Thoughts? Would be nice to have something off the shelf but if I must then I will find some time to tackle a project.