Sound mixing: Help configure dmix for flash, xmms, totem or make default.

[Ralph Katz <ralph.katz@rcn.com>]

How can I make alsa dmix default for all sound?

On sarge, esound provided sound mixing for this box.  Upgrading to etch,
I changed to alsa and think dmix can provide a better solution.  I found
good help at http://alsa.opensrc.org and currently have dmix working
nicely for gaim, mplayer, and gkrellm by configuring each one with a
simple command line or option change.

Could asoundconf help set a default for dmix?  I can't understand its
man page.  There are no current dotfiles for alsa/asound.

If each app must be configure for dmix individually, how can these apps
be set for dmix:  flash plugin, xmms, totem?  The syntax that worked for
the apps already configured doesn't seem to fit here.

Pointers and suggestions appreciated.

Thanks,
Ralph