I know the system isn't exactly audophile equpiment, but I feel it is a good choice considering the constraints my budget places and the fact that I watch movies, play games, and listen to music on my computer. I know I'm not going to get audiophile quality, but as an audio enthusiast, I'd like to get the best possible sound out of the system.
Anyways, nothing in the pictures is precise. I'm just sort of placing everything where I think might be a good spot.
The two front speakers are as far apart as my desk will allow (Roughly 4ft) and tilted towards me. The rear speakers are behind me and roughly the same distance apart. The center channel is ontop of my monitor stuck together on with tape.
I have the subwoofer on the floor, kind of centered between the speakers because the sub handles frequencies up to 130, and I heard only 80 and below are omnidirectional so I thought the spot might be good. The boost in volume by corner placement doesn't really seem needed, as the sub can go pretty loud.
So, I plan on using my sound card's surround feature which clones stereo sources to the rear speakers and I'm not sure where it get's the center channel from.

(I know it's not upmixing anything, though.)
Is that bad? Should I not use that?
Alsooooo, is there a better way to place the speakers?
And also, I've come to the conclusion that I should leave all my volume knobs on the computer to 80 to avoid clipping? Am I correct in thinking this? When I need to adjust volume, I do it physically on the speaker's control pod. Is there a better way to have the volume setup, or does it not matter?
Uhhh...yeah. Sorry for so many stupid questions!
And umm.....if there's anything else I should know, please let me know.
Thank you!!