The kX Audio driver was developed for soundcards based on the Emu10k1 and Emu10k2 chips, such as the SBLive, Audigy and other cards. These Emu10kx chips are actually Digital Sound Processors (DSP). If you look at the DSP part of the kX Audio Driver, you can in fact edit the properties and behaviour of the chip on your sound card, by modifying routings, loading and tweaking effects and so on.
