This program is very easy to use. You just have to choose the DVD you want to extract the audio from and open Acala DVD Audio Ripper. Once you select the DVD from the program, you can extract the audio in the format you need: MP3, WAV, WMA, MP2, M4A, ACC, AMR, ACC, AU, or AC3.
A great thing about this application is that it extracts and converts the files at high speed, even when you are doing it by the batch. Besides that, it lets you turn off the computer automatically after it's done converting.
The interface in Acala DVD Audio Ripper is very intuitive, so anyone can use it without trouble and extract the audio from their DVDs.
The trial version only converts 50% of the tracks.