VDOWNMIX PLUGIN =============== The vdownmix plugin is a downmixer from 4-6 channels to 2-channel stereo headphone output. This plugin processes the input signals with a simple spacialization, so the output sounds like a kind of "virtual surround". For example, define the below: pcm.!surround51 { type vdownmix slave.pcm "default" } pcm.!surround40 { type vdownmix slave.pcm "default" } and the outputs from video player to these PCMs are converted to the default 2.0 output with a proper downmix. The accepted format is currently only S16.