Murf5 :
So would I connect the riser to the graphics card or the sound card?
Ideally, you should only use a riser for the sound card, as video cards can possibly lose performance or may be unstable when using a riser.
For your motherboard, I also suggest you use a PCI-E X1 riser on your sound card. An example is this:
http://www.newegg.com/Product/Product.aspx?Item=9SIA7253CK3419
This will allow you to connect the sound card underneath the video card. You will have to find a place to install your sound card that doesn't touch the metallic parts of your motherboard or casing though. This is certainly not ideal, but allows you to make use of the PCI-E x1 port underneath your video card cooler.
In my opinion, you would be better off either finding a larger motherboard, or exchanging your sound card with a PCI (not pci-express) sound card, as your white PCI slot is most probably available.