Hi Steve!
I am not too familiar with Debian, never took the plunge completely really. I'll move this post on over to the Debian forum to give it the exposure it deserves. In the meantime, a bit of background:
It appears that the message is letting you know that the alsa 'soundcore' module is not loaded or able to load. This most likely is the result of the kernel not having it listed as a module (whether it's because you have it as a 'y' or maybe a 'n') that can be loaded. So, hopefully, since you decided to install Debian, you are familiar enough to compile a kernel
If not, I'm sure one of the Deb guru's will help you with furthering this.
The other thing is that lspci is a great tool. However, it will blindly list what you've got, not necessarily listing what your kernel will/does support. So, it's great for seeing what you've got, but not so great for seeing what you can actually
use currently.
Good Luck!
Cool