Cookie, many home/consumer video cameras have a RCA and or stereo mini 1/8" audio input jack, allowing you to run a line out from the mixer to the camera.
Another cheap option might be to run your existing camera's video signal out to a VCR or stand alone DVD recorder video in, along with the Behingers line out to the VCR audio in. Recording to a VCR/DVD deck would also allow you to monitor live video during taping. Sure it's not going to be broadcast quality but it's a great cheap way to work the bugs out of your project.