I have yeah but I didn't use them as i was provided with a cd that did it for me. the soundcard works fine. Like i've been saying though I need all my speakers to work. I have tried to configure my speaker set up by selecting advanced speaker settings but that does nothing. It's something that cannot be fixed im afraid simple as that.
Yes, the X-Fi is the one with all the knobs and whistles, I don't know if it will be compatible with your mobo. Nor do I understand why it is going so cheap - these are normally about £250. The one I had in mind on my second link has already been sold, but that does not surprise me, it was only £39.