I recently hooked my Tivo up to Directv. When I run the directv to the Tivo and then to the TV, I get audio feedback. The feedback is really bad when I use red/white wires. It is still noticeable, but not as bad, when I use a coaxial cable. I don't think that the Directv box is the problem because I do not get the audio feedback when I hook the tv to the Directv direcly.