# modprobe snd-aloop id=Loopback pcm_substreams=1 timer_source=Generic
pcm.desktop {
    type plug
    slave.pcm "dsnoop:CARD=Loopback,DEV=1"
}
pcm.splitter {
    type plug
    slave.pcm {
        type multi
        slaves {
            a { channels 2 pcm "dmix:CARD=Generic,DEV=0" }
            b { channels 2 pcm "dmix:CARD=Loopback,DEV=0" }
        }
        bindings {
            0 { slave a channel 0 }
            1 { slave a channel 1 }
            2 { slave b channel 0 }
            3 { slave b channel 1 }
        }
    }
    route_policy "duplicate"
}
pcm.!default {
    type asym
    playback.pcm "splitter"
    capture.pcm {
        type plug
        slave.pcm "dsnoop:CARD=Generic,DEV=0"
    }
}