I have a system built around the ECS KN1 Extreme motherboard with the Realtek ALC655 onboard sound chip, and I also have a PCI Creative Live! 5.1 soundcard inserted with a set of Creative Inspire 5100 surround speakers. I've just installed Windows Vista ultimate to replace my old Windows XP Pro install, and I discovered that my Creative soundcard wasn't fully supported and so I decided to use the onboard sound, which is supposed to support 5.1 Speakers by changing a setting in the driver. I installed the driver and set it to output 5.1 surround, plugged the speakers into the correct ports, and tested each speaker in the driver software, where every speaker seemed to work properly. However, when I try and play stuff from other software (Youtube, Google video, VLC, Winamp, Media player, etc..), the two rear speakers don't output any sound, despite working fine when I tested them in the driver software. Please could someone help me with this.