I'm using 32 Bit. I e-mailed Sabrent and Jeff had me try and see if I got any different result on another PCI slot. I tried 2 other slots and had the same result...no sound. The weird thing is, I can go to the configurator and click the speaker to mute and un mute. I hear a noise when I do that.
This is very frustrating because I only purchased this sound card because it was on Microsoft's website for compatibility. I purchased two for two different computers because the card I had in them were not on Microsoft's list.