sndconfig reports that the "Ensoniq 5880 AudioPCI" it finds isn't supported, but it works perfectly with the es1371 sound module. I suppose this can be considered as a bug and therefore should be fixed.
This is fixed in CVS; it will be fixed in the next kudzu/sndconfig build.
*** Bug 19924 has been marked as a duplicate of this bug. ***
I have upgraded from sndconfig 0.57 to the 0.58 available in the beta (fisher) and the same error occurs.
You need the new kudzu package.