pcm.!default
{
    type asym
    playback.pcm {
        type plug
        slave.pcm "orouter"
    }
    capture.pcm {
        type plug
        slave.pcm "hw:Loopback,1,0"
    }
}

pcm.orouter
{
    type route
    slave.pcm {
        type multi
        slaves.a.pcm "dmix:0,0"
        slaves.b.pcm "dmix:Loopback,0,0"
        slaves.a.channels 2
        slaves.b.channels 2
        bindings.0.slave a
        bindings.0.channel 0
        bindings.1.slave a
        bindings.1.channel 1
        bindings.2.slave b
        bindings.2.channel 0
        bindings.3.slave b
        bindings.3.channel 1
    }
    ttable.0.0 1
    ttable.1.1 1
    ttable.0.2 1
    ttable.1.3 1
}

ctl.!default
{
    type hw
    card 0
}