how to set up asoundrc to use jackd

(Edit: For UbuntuStudio 8.04 or 8.10, this will not work, see bug #84900)

how to get Flash (via Firefox) to play when jackd is running?
how to set up .asoundrc file so alsa uses Jack as an output?


Here's how it's adviced to do on the alsa wiki:
In short, you can set up your asoundrc file to specify JACK as the output, like so:

pcm.!default {
  type plug
slave { pcm "jack" }
}

pcm.jack {
type jack
playback_ports {
    0 alsa_pcm:playback_1
    1 alsa_pcm:playback_2
}
capture_ports {
    0 alsa_pcm:capture_1
    1 alsa_pcm:capture_2
}
}

ctl.mixer0 {
type hw
card 0
}

For my Delta1010 I'll have to change this a bit,
but to be honest, I'm overworked and the Belgian state is getting me to a nervous breakdown with their "activation of the search behaviour of the unemployed", and I'm unemployed so they think it's ok to send me to Amsterdam for a job. As if there's nobody unemployed in Amsterdam.