Ohh, this all seems to be really a bit strange.
And the module 'soundcore' (lsmod should show it) is also running?
Well, let's check whether or not
you can hear at least a bit of a cuckoo cry in your headphone or speaker:
I attach you a very small wav.file with a big frequency change in sound.
run "cat /dev/dsp0 > <this file>" and/or
"cat /dev/audio0 > <this file>"
as root and listen. I've named it "test.txt".