I am in a similar boat on Mandriva 2007.0 PWP running ALSA 1.0.12. I do a 'modprobe sn-usb-audio' and the driver loads fine. But ALSA doesn't see my Edirol UA-1EX though it is listed in MCC as a scanner! If a run 'alsaconf', it either deregisters snd-usb-audio or deactivates the USB interrupt. Looking for help.

TIA,
Danno