Doesn't make any sense, I have an 09' Pro so running a mini dvi to hdmi, and mini to rca cables for audio. Can get video, but no sound. Tried on my other tv's and same thing (all LCD's none older than a year). Went through settings on tv's, no go. In sound menu only once it showed some output thing (instead of internal or headphones) but it said something about no output control. Headphones work fine on it. I tried a different setup of mini to rca and same thing, no sound output. Everyone says you should be able to choose your tv from the sound menu on os/x, but ummm nothing shows?