I'm not sure how they are going to solution two courts under the same roof or what their court orientation would be, but here's some pics of the Midwest Regional at Lucus Oil to give you an idea.
With the Star having a lower ceiling than the Lucas Oil, the curtains would probably go from the ceiling to the floor. The Cowboys organization has really invested in high-tech stuff at Cowboy stadium and i assume at the Star, it wouldn't surprise me that they find some sound absorbing/blocking material to divide the two courts.