I'm starting to tear my hair out. I've tried patching ivtv-fileops.c, i've tried "ivtvctl -d /dev/video0 -q 1". The latter resulted in the following error: "ioctl VIDIOC_S_AUDIO failed: Invalid argument". I've tried this with ivtv 0.3.6w and 0.3.7a. Still no audio on video0. Any suggestions anyone?