I guess about the only thing I personally do is make sure I am using a video cable. The 'cheap' cables that come with your A/V gear quite often have really wimpy audio interconnects (red & white RCA ends) and then use a halfway decent video interconnect (yellow RCA ends). I would go ahead an use the yellow cable as I know that should be 75ohms, while the audio cables may not be. Plus, if it is a little bit thicker and better shielded, it could help protect the sound quality a little more.