Решение нумеро дуо

По поводу вопроса о дублировании вывода на уши и колонки решение дал Антон Фёдоров, за что ему огромное спасибо.
Собственно, вот оно:

[stanis@harmony ~] % cat .asoundrc
pcm.!default plug:both

ctl.!default {
  type hw
  card ICH6
}

pcm.both {
  type route;
  slave.pcm {
      type multi;
      slaves.a.pcm "intel8x0";
      slaves.b.pcm "aureon";
      slaves.a.channels 2;
      slaves.b.channels 6;
      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;
      bindings.4.slave b;
      bindings.4.channel 2;
      bindings.5.slave b;
      bindings.5.channel 3;
      bindings.6.slave b;
      bindings.6.channel 4;
      bindings.7.slave b;
      bindings.7.channel 5;
  }

  ttable.0.0 1;
  ttable.1.1 1;

  ttable.0.2 1; # front left
  ttable.1.3 1; # front right
  ttable.0.4 1; # copy front left to rear left
  ttable.1.5 1; # copy front left to rear left
  # mix front left/right to subwoofer and center
  ttable.0.6 0.5;
  ttable.1.6 0.5;
  ttable.0.7 0.5;
  ttable.1.7 0.5;
}

ctl.both {
  type hw;
  card ICH6;
}

pcm.aureon {
   type dmix
   ipc_key 1024
   slave {
       pcm "hw:1"
       period_time 0
       period_size 2048
#        buffer_size 8192
       buffer_size 65536
       buffer_time 0
       periods 128
       rate 48000
       channels 6
    }
# the channels of this card are mixed-up
    bindings {
       0 0
       1 1
       2 4
       3 5
       4 2
       5 3
    }
}

pcm.intel8x0 {
   type dmix
   ipc_key 2048
   slave {
       pcm "hw:0"
       period_time 0
       period_size 2048
#        buffer_size 8192
       buffer_size 65536
       buffer_time 0
       periods 128
       rate 48000
       channels 2
    }
    bindings {
       0 0
       1 1
    }
}

ctl.aureon {
   type hw
   card "Audio"
}

ctl.intel8x0 {
   type hw
   card "ICH6"
}