linuxmce@dcerouter:~$ cat /etc/asound.conf.backup 
</etc/pluto/alsa/virtual_cards.conf>

pcm_slave.analog_convert48k {
        pcm "plug:dmix:,0"
        rate 48000
}

pcm.analog_playback {
        type plug
        slave analog_convert48k
}

pcm.!default {
        type asym
        playback.pcm "analog_playback"
        capture.pcm "plug:dmix:,0"
}