Active Crossover using PC and multi ch. Soundcard?

[panialex]

hi, first of all im spanis native so i apologise for my english.
i was long searching for some solution to have good sound in my pc, first of all a found a 3way hifi active crosover 24octave full instructions to bould, but since my skill and none of the intrumentations necesary to adjust it, i can not make the proyec, then i surende to boy some solution, but there is not a desent solution at cheap price, no 3 independent way active crossover.

Then i get to this idea wile searching 3way active crossover, to use the sound card and by software crossover each output, first i found the foobar2000 but in these only what is played inside it is crossovered, the i found the Kx proyect, as i understand it makes the work in the sound card, so everything is crossovered, did i undertud it rigth?

so here comes my questions:
#1 with the Kx can i do it like thise?
http://xover.sourceforge.net/active_xover_setup.png

#2 can i use only 1 sound card, or can i use 2 and more to create more outputs

#3 in my sound card with foobar it since to cut the sobwoofer frecuencis, not leling it out or simpli dont suport the, with Kx can i filter the subwoofer so i only add an amplifier and a subwoofer speaker?

thats all for now and thanks

[kingcole]

PC active crossover ：
Realtek HD audio（ALC892）
Virtual Audio Cable
ASIO4ALL
Maize Studio玉米
FabFilter Pro-Q
Sound Delay
JustLMS