On the Jessie (latest) version of Debian for Raspberry Pi, the configuration files are not located (or missing) as described in your setup document. Using aplay -l shows the adapter as device 1. However I cannot get the device to work. If I try to use the audio settings though system settings, the device shows up. If I select it and make it default, it changes but does not save.
I have a wifi usb as the only other usb device plugged in.
There is no alsa-base.conf file, but there is a alsa.conf file in /usr/share/alsa but I don’t see any lines that have the options line as suggested by the setup. Even if I add the lines, nothing changes.
What do I do?