Hello everyone I have a uc80 excelvan hd projecter it has rca and audio input I am currently hooking it up with a hdmi cable to my dvd player the thing is the sound is buzzing when I connect the aux cable to my stereo audio input and my stereo dose not have any other audio ports any suggestions or ideas to solve my problem. When I hook up the laptop to the stereo it works perfect. But I really just want to use my dvd player and hook it up to my stereo.