kmixer is a kernel level audio mixer for Linux,like esd or aRtsd. It s works in kernel mode, so it can handle all requests to /dev/dsp, and mix all audio streams from all process, accessing to dsp and writing to real dsp. -kmixer is a kernel level audio mixer for Linux, like esd or aRtsd. It s works in kernel mode, so it can handle all requests to/dev/dsp, and mix all audio streams from all process, accessing to dsp and writing to real dsp.