I'm thinking of this question:
http://serverfault.com/questions/275767/how-can-i-download-the-correct-sound-driver-for-my-window-xphttps://serverfault.com/questions/275767/how-can-i-download-the-correct-sound-driver-for-my-window-xp
It's a textbook "Belongs on Superuser" question, but if it were migrated, it'd be a duplicate. The question that Ignacio quoted in his answer is virtually identical (and has a good answer from Ignacio.)
I voted to migrate, but then a second later I wished I could change my vote to simply close. I know it's still off-topic here, but I think the "damage" by having an off-topic question here is less overall than moving it, then having it closed as a duplicate there.