Guild Wars version type does not matter. It's a marketing term for the package you bought which will in turn give you your account access. Everyone's game client up to date is the same. Now that that's cleared up...
So what you're saying is, when you change the Compatibility Mode under GW.EXE's properties to Windows 98, the sound is fine? If that's what fixes it, why would you need help trying to fix it?
Did you make sure your sound card drivers are up to date? Did you install this sound card before or after you started playing guild wars (or before/after this current install of GW?). Did you do anything to the system at all since installing Guild Wars?
And down to the simple things: Is the 3D Audio Hardware and or EAX boxes checked at the bottom of the sound sliders tab? What is the sound quality slider set to?
Last edited by Chrisworld; Dec 09, 2010 at 01:02 AM // 01:02..