Manually purging the dpkg status file with
this procedure and then re-installing OSS with command
dpkg -i oss-linux-4.1-1051_i386.deb resulted in a successful installation. Commands
osstest and
ossdetect -v are now nominal,
aumix is now nominal, and I now have both input and output with Skype. Thanks to temujin at the
OSS community at 4front.com for the solution.
Must use OSS because despite outstanding assistance efforts by the ALSA community, could not get ALSA to support my sound card.