I have some concert DVDs that I'd like to rip the audio off of so that I can listen to them on the go. I tried to do this via Soundflower and the Quicktime audio recorder, but it gave me a weird echo on all the tracks. I've had similar issues trying to convert VOB files in ffmpegx. Is there a simple way that I'm missing? I've been searching for months and haven't found a suitable solution.