pcm.!default 
{
    type plug
    slave.pcm "swmixer"
}
                                                                                
pcm.swmixer 
{
    type dmix
    ipc_key 1234
    slave 
    {
        pcm "hw:0,0"
        period_time 0
        period_size 1024
        buffer_size 4096
        rate 44100
    }
}