I have a different 2 card problem. hw:1 is my main
card.
I'd like to duplicate the output of hw:1 and send it to
the output of hw:0. Mandrake 10.1, ALSA 1.0.6 here.
there's an ALSA plugin which can do so - unfortunately I
forgot the name. I remember DMIX and DSNOOP - there's a third
one which can do what you need.
Best regards
ce