Problem with DVDs

sudo apt-get install libdvdread4

sudo /usr/share/doc/libdvdread4/install-css.sh

Almost forgot to mention that there are laws that may be prohibiting the installation of this software in some countries.

For extracting the audio track from the DVD you could use ffmpeg or mencoder. I use such a commandline to convert youtube files to MP3:
ffmpeg -i "$i" -acodec libmp3lame -ac 2 -ab 192k -vn -y "$target_file"
where $i is the input file and $target_file is the MP3 file.

Thanks a lot! libdvdread4 works perfectly.

As for extracting the audio of a file, the problem I have is that I don't get the filesystem on dvds (this is probably due to me not being very savvy), so I can't work it out, for now at least.

For youtube files, I use "easy youtube downloader".

Anyways, it was really helpful, thanks a lot!!!

When I want to extract the audio part of a video file PiTiVi helps me out a lot.

I don't know if it can import directly from a DVD, but maybe some other video editor can. Just unlink the video and audio streams, delete the video, cut off parts of the audio you don't want and render the project as .flac or something that suits your needs.

You should be able to use Audacity to load the vob file from the DVD. Audacity will drop the video part and just use the audio part which you can then process and save as you wish.