Simple my freind, get an audigy 2Nx. They might have some small issues, but damn they sound good. Only card on the market that supports DVD-A and 24bit decoding, in CMSS 6chan audio. I have a brand new but medium install in my new car (four new pioneer speakers and 2 12inch subs) and when I play the THX test them under the audigy showcase program, my freinds's jaws drop!
Had some other sound cards in my earlier installs but this one ****s on them all.
It allows you to play some music that your used to hearing, louder, because on other systems as the finer frequencies your used to distorting at higher noise levels, ....dont on the audigy. And you can listen to it even louder