Audio Help with speakers

[Biglemon29]

I have a Xonar DGX audio card. Currently I have headphones plugged in. I want to get these speakers http://www.amazon.com/Soundsoul-generation-Colorful-Enhanced-features/dp/B00K85PRFA/ref=cm_wl_huc_item
What ports would I plug them into?

 

[alexoiu]

Unplug the headphones and plug in the speakers or use the audio port on board.