I tried to make Redneck Rampage working with Ultrasound drivers but... it doesn't seem to work. In the menu I can get sound with the Test sound option, but I've got nothing in game :( !
Any help would be gladly appreciated :)

yay. I didn't think of it... I might need some sleep :)
The sound is a bit better... but still sucks though :D.

I've heard Ultrasound can be a bit buggy you may want to just use the lower quality soundblaster.