If the option is greyed out in quickset for itunes, winamp, media player reinstall the program ( ie once newest quicksets installed then reinstall itunes ) and it should be selectable after a reboot, thats how it went for me.
The chap said it right earlier the lights need to be set up to respond to any sound ie mic games etc, just as it does in mp wa Itunes, would then have lights in every game, maybe a seperate program needs to be made to listen to the sounds and trigger the fx plug in but it would be a good thing for dell or any one to do.
After all whos really gonna bother to write software for the xps unless dell bribe some games makers or the programmers own an xps.
come on dell get ya finger out

Also on cnet he says its the first time ever overclocking was possible for a laptop, i dont think thats true, maybe for dell laptops if you dont count pin mods, but i see rockdirect advertising limited overclocking abillities in there laptops before the 7600G was available.