The script here http://pastebin.com/mVxFZVhY should do the trick if you run it as root. I generalized it so it always pulls the latest kernel. The source tree it downloads may be labeled differently than the ubuntu build number, but we’re not rebuilding the entire kernel for this, only the snd-usb-audio driver, and it’ll point to the official ubuntu headers so the kernel version ends up matching up after all is said and done.