I am using a vga cable to connect my laptop to the tv and the video works. I realize vga cables cannot produce sound, so I bought a 3.5 male to stereo RCA male (one end is a headphone end that plugs into my laptop, the other end has the red and white cables that plugs into my tv) but I still cannot figure out how to get the sound to work. I was hoping somebody could help me figure it out. I tried going through the audio settings on my laptop and tv but maybe im missing something. I have a trutech tv model number pvs21175s1 and a macbook pro laptop. is there a setting on my laptop/tv to get audio? is my audio cable the right cable I should be using?