Hi... these are all my thingies.
I have to add that non-free firmware package as well. Some need it, some don't. The decision was made to just install them on a case by case basis. I will see if I can't just get that package installed again.
I added functionality to handle the Audigy2 specifically a few weeks ago. It may not be perfect yet. It reports devices in a non-standard way. If you want to drop into IRC, I will try and make it better. (I see you dropped in not too long ago).
As for 260, we are at "if it ain't broke, don't fix it" stage. There are mechanisms in place to install the latest driver (304.xx), but it is an ugly way to do things, so I only do it IF there is a REQUIREMENT to do so. You can switch, if you like. It will only require uninstalling 260, and moving your pciid around in nvidia-install.sh from 260 supported to nvidia-current supported.
The IMDB is a known issue. It did not affect me so I was sluggish to fix it. I will do that today.
This is also going to upgrade your alsa by default... so, again, drop into IRC and we can go over all of this.