For anyone using the Sabrent SBT-TVFM TV Tuner card with Ubuntu Hardy, I just figured out the Modprobe options line that seems to work great with Xawtv and TVTime! Copy the following into /etc/modprobe.d/alsa-base

options saa7134 card=42 tuner=43

I am able to see all channels (73+) and sound is perfect. Good luck!