pre-compiled driver builds
Download most recent pre-compiled driver binaries here.
kxdrv3552-full.zip -- Contains Windows driver for x86 and x64 architectures, and also documentation, DSP effects etc.
kXAudioDriver-1.11b0.dmg -- Contains latest OS X driver for x86 and x64 architectures.
'Old versions': legacy driver builds. 'Old legacy skins': skin files for kX Mixer, which are probably no longer compatible with new driver releases.