"Multimedia Audio Controller" and your SoundBlaster Audigy SE card are the same thing, but because no driver is installed for it Windows simply refers to it by it's generic device type. The driver tells Windows what make & model it is.
When you install the driver, the "Multimedia Audio Controller" item in Device Manager will automatically change to "Creative SoundBlaster Audigy SE" and without the question mark.
It's driver for Vista & XP is here:
http://support.creative.com/Products...=Sound+Blaster