Yes it would but be careful what you get both of mine are Asus Xonar DG's and the 5:1 system plugs into that, It only cost me $32 but I see it is a bit ore expensive over there now Newegg.com - Computer Hardware, Input Devices, Sound Cards, 7.1
there are others but that one is good.
If you go down that track make sure you download the drivers
from Asus the CD it comes with is pretty ordinary. The good thing is you have a control centre for mixing, effects, and so on.
Oh the drivers will come in a zipped fie and you will need a program like 7zip to extract the files but it is free so no worries.
So for about $135 you will have a terrific set up and system, and you'll be wondering why you ever worried about the monitor
If you are happy about installing cards etc no problem if you are unsure just ask.