I have searched the forums for suc a posting and found many posts; however, I did not feel my question was answered so here I go. From the other posts I found that ImTOO DVD Audio Ripper was a good method of extracting audio; however, it cost money that I do not have right now. So, in my search for free alternatives I found DVD Audio Extractor 2.0.1, it can be found here: http://www.download.com/DVD-Audio-Extractor/3000-2140-10306847.html?tag=lst-0-10 So, I downloaded that program and am now faced with a question. What is the difference between LCPM (48KHZ 16bit 2ch) and AC3 (48KHz 6ch). I guess my question is which one sohuld I extract.