how do i set up my creative x-fi soundcard's software settings when i connected sony hi-fi music system. how do i configuire x-fi crystalizer, bass level and bass boost amount, volume level, speeakers how many (i mean sony music system has 5/6 speakers attached) ....please help me to have best settings... and moreover would i check digital output only checkbox? my sony music system dvd playable n dolby digital supported.