http://members.home.nl/nahutec/kxtutor/kxtutor.html
Make sure you check out this DSP guide first. It explains everything. The KX mixer as downloaded IS complicated however this tutorial explains how musicians can benefit.
With an SBLive 5.1 card you have REAL ASIO ability for recording. No ASIO if you use Creative drivers. You can also create and save all of your DSP configurations. For playback each MIDI channel can be split up to go to different FX Busses with effects for each instrument as you choose. See one of my playback setups below. With KX the front and rear speaker outs are swap thus utilizing the better I2S codec as opposed to AC97.

Make sure to get the latest edition which is 3538m. 3539 is out but still going through some debugging. Don't go to the web site as it's not quite up to date.

John
ESI Gigaport HD+
Lenovo Turion II /4 Gig Ram/ Win7x64 be
15.6" Monitor
"The only Band is a Real Band"
www.wintertexaninfo.com/BANDS/JohnnyD.php