Glad to hear your audio is finally working.
As to the wifi, it is as I expected: the same BCM4312 chipset as on my last laptop.
After a long time of searching I finally found back the 1-click install that I used one and a half years ago. Browse there with the laptop, click the button, let it build new kernels, and reboot. That should be it; you might have to enter Yast and enable the wifi device if it isn't working right from the start.
http://packman.links2linux.org/package/broadcom-wlFor future installations, you might, sooner or later, want to add the Packman repo to your Yast sources list, because it is indispensable anyway:
http://en.opensuse.org/Additional_package_repositories#PackmanOnce enabled, you would have been able to manually install those above drivers from a root terminal like this:
zypper install broadcom-wl broadcom-wl-kmp-desktop