Always wondered why the sound didn't work, not that it bothered me.
I can confirm that installing esound was successful. No other tweaks were necessary. The PC now beeps and squeaks with alarms and message notifications.
Maybe I'll disable it for a quite life.!
Asus M4A79XTD EVO motherboard, AMD Phenom II X4 965 CPU, 4 GB ram.
Gigabyte NVIDIA 9800GT Silent graphics card, Dell FP2007 22 Digital Flat panel.
Samsung harddisks 2 x 200gb SP2004S,1 x Hitachi 750gb HDT 72107,Optiarc SATA DVD-RW. Sabayon 64 & 32bit.