klss, thank you for your script. I have tried both scripts and both versions of alsa on fresh installs of hardy and intrepid.

In /etc/modprobe.d/alsa-base, I set
options snd-usb-audio index=0
options snd-hda-intel index=1

I do not think this has anything to do with my problem.

In every case, when system/preferences/sound is set to ALSA, my emu 0404 usb sounds very distorted.

But when system/preferences/sound is set to Autodetect/OSS/PulseAudio, my emu 0404 usb sounds OK.

Please, help me k l s kenobi; you're my only hope. Why does my emu 0404 usb sound distorted with ALSA?