I'm not sure what's confusing about this. It should be menu > sound, and then you get a bunch of settings to pick from. So I'm not sure what the problem is. What are you trying to do that you can't go?
Why i cant set sound type on my new ES6500 plasma form tools menu? My old C650 had a sound options menu under tools button. Now i have to surf the menu 5 minutes before i get to sound type settings (PCM/DTS/DD) watching my MKV files over DLNA. How can u make such error? Does samsung engineers use some other brand TV-s?