tombini

http://www.audiovero.de/en/acourate.php 286 €.. Could you recommend any software without the price tag? ie; free?

I've done a cursory search of the forums (and good 'ol google as well) and haven't found an answer to my question. I simply want to know if it is physically possible to run different filters on each individual audio jack in my computer. If so, what software works well with this. Basically, I want to run a low-pass filter to the woofer and a high pass to the mid and tweeters. Preferably without having to buy a physical mixer. Does anyone know how to solve this problem? Cheers in advance. Tombini