I have a sound blaster Audigy with an Optical Digital I/O card that i just got. I have the optical cable running from SPDIF out, to SPDIF in on my reciever. In the AudioHQ (in control panel) i have the Digital Output Sampling Rate at 48KHz (was 96KHz, but was too hight for the optical cable i think). Here is where the main problem is, under the speaker option (where you can test all your speakers with front right, center, front left... etc.) When i run that i can only hear front right and front left. Why? i have no idea what i am doing wrong. is there a certian driver i need to install? the speakers are the S4 MidiLand 7100 Plus. Thanks for any help.