Television sound an issue?

Although many wont see it as necessary I DO plan on putting a small tv and dvd player in my CT to handle grouchy children near bedtime and keep my friends/family and I by the bonfire.
My question: has anyone mounted a tv flush within a wall (such as a cabinet or false wall) IF SO: did you encounter any issues being able to hear the sound? My thinking is that the newer flat tvs will have the sound coming out of the back somehow?
My question: has anyone mounted a tv flush within a wall (such as a cabinet or false wall) IF SO: did you encounter any issues being able to hear the sound? My thinking is that the newer flat tvs will have the sound coming out of the back somehow?