I've just received my new computer, and to save cost, I opted for the Realtek onboard audio over a Creative Soundcard. The issue being, is that music and sound come out of the rear and central speakers when I test them, and the same as when I run the Valley Benchmark, but never when I listen to music via Media Player or YouTube, for example. Is there any way to fix this? I've always used a Creative Soundcard, and everything has always come out all the speakers (5.1).