nathan@ubuntu:~/Desktop/XFiDrv_Linux_Public_US_1.00$ make
make -C /lib/modules/2.6.35-22-generic/build M=/home/nathan/Desktop/XFiDrv_Linux_Public_US_1.00
make[1]: Entering directory `/usr/src/linux-headers-2.6.35-22-generic'
  LD      /home/nathan/Desktop/XFiDrv_Linux_Public_US_1.00/built-in.o
  CC [M]  /home/nathan/Desktop/XFiDrv_Linux_Public_US_1.00/xfi.o
/home/nathan/Desktop/XFiDrv_Linux_Public_US_1.00/xfi.c:14: fatal error: sound/driver.h: No such file or directory
compilation terminated.
make[2]: *** [/home/nathan/Desktop/XFiDrv_Linux_Public_US_1.00/xfi.o] Error 1
make[1]: *** [_module_/home/nathan/Desktop/XFiDrv_Linux_Public_US_1.00] Error 2
make[1]: Leaving directory `/usr/src/linux-headers-2.6.35-22-generic'
make: *** [all] Error 2