You might want to consider the Audio-gd NFB-11.
It's a bit uncommon, but a true quality product with a solid manufacturer reputation. It's also quite convenient for switching between monitor and headphones.
It will set you back 305U$D, but it's an entirely different category than a...
I would not bother too much with the slightly different model number. Tech companies often makes vendor-exclusive product variant (with no or virtually no tangible difference) so they can't be price-matched. WalMart is pretty big on that dirty trick.
It could also be panel lottery, but I'm...
Try to play your music with foobar2000 and the channel mixer extension.
Right now, you may have a 5.1 setup, but you are playing music recorded in stereo (2.0) format. In this case, only the 2 fronts will receive signal.
It does look simple and unrefined, but that is just the surface. The technical refinements and endless expansion possibilities are making it a geat choice. you can customize it too.
Well, audio products from creative are marketed and targeted (mainly) at "Gamers". They promote flashy sound effects and other gimmic that actually change your sound in a negative way. Also, most of their cards don't support industry standards like from pannel audio connectors, they have pci-e...
Foobar2000 is the way to go. Use ASIO or WASAPI (if vista or win7). google it. It does a difference.
This is truly the best audio player out there and it's extremely simple. It also handle large library with ease.
Anything in the Asus Xonar range is ok. Don't go for creative ...
The DS should do the trick if you don't care about sound quality. (you obviously don't since you brought those awful speakers)
If not, go for the DX.