uSeesoft DVD Audio Ripper 18.104.22.168
uSeesoft DVD Audio Ripper will meet your need perfectly, for it can rip and convert DVD files to audio format, like DVD to MP3, DVD to WAV, DVD to WMA, DVD to M4A, DVD to AAC, DVD to AC3, DVD to OGG, DVD to APE, etc.
Of course, all of them are in a good output ripping quality and you are able to put your audios in your portable players.
1. Rip all DVD videos from both real DVDs and DVD-Video compatible folders: