Hi Chud67
I had a similar problem, with the onboard sound for an MSI Mobo, it appears the drivers are loaded and the system is correctly configured but no sound.
The solution believe it or not is that the sound drivers default install is 'muted'.
If you go into yast sound card and volume and set all the controls to say 90 you should get sound.
You may have to play about with the individual channels to get the best result then save your settings.
Then having tested all that, do not be surprised if it still doesn't work in your chosen media player, as there are also separate volume controls for each media player, which once again were set to 0 (zero) volume by default on the driver installation.
Hope this helps
Mad Malc