I just picked up 2 of these cards for my linux box and ran into the same issue. however all is not lost. ~Pending on what version of Ubuntu you are running ( I am running 12.10 studio version) the command is quite easy and should work with any *buntu distro 8.10 and up.
Download the firmware file from this link:
after you download that folder change to the directory that your download is in (/home/
Copy the firmware file to the firmware directory
sudo cp NXP7164-2010-03-10.1.fw /lib/firmware
then, reload the saa7164 module:
sudo rmmod saa7164
sudo modprobe saa7164