Hm, could tell you how to do it in Windows, but haven't tried it on my Mac.
I suspect what you need to do is use Garageband to record the Mac's audio out, thus creating a 44.1k WAV file which you can then compress (or not) as required. Let me investigate.
(Disclaimer: this is illegal and you are a very naughty boy)
Dur, answer staring me in face. You can extract only the audio from a DVD using MacTheRipper, though it comes in a file format that you'll probably need to convert using something else (google is your friend).
Or you can record it in real time using Audacity (which might be quicker, frankly), or perhaps Garageband, though I haven't tried that.
I used this for extracting audio only from DVD-R disks.
(I had recorded BBC R3 radio plays in audio only to Nicam VHS years ago. I copied the VHS to DVD-R and then used MPEg Streamclip software on my iMac to demux the audio files to AIFF enabling me to import them to iTunes.)
Or you can rip using MacTheRipper / Handbrake etc., open in Quicktime Pro (assuming you have this) and then just choose File > Export and say to Export Sound to Wave. Once you have the WAV, you can then convert that to any format you like. In Handbrake, you can also just choose the Chapters you want to export so if you only want certain songs, this will speed it up a bit.
I use this method to export little clips of dialogue from films, convert them to MP3 and then have them as a message tone on my phone to provide hours of amusement for myself and my friends...
Update - used MacTheRipper to extract the data off the DVD. Now to convert it to WAV... I purchased QuickTime Pro (literally two minutes ago) and for some strange reason it will not let me export as sound. It only gives me the options to export as a movie.
What format does MacTheRipper export to? I have to admit I use Handbrake and export to MP4 format (never used MacTheRipper, but I know everyone raves about it) and have no issues. If you're still getting issues, I'll do a walk through tomorrow.
Ah yes, I'm pretty sure Quicktime won't understand the VOB file. All of mine is done on the Mac, I'm pretty sure it can be done without losing audio quality too but have to admit this has never been a major concern when making MP3s for my phone! I'll go through it all tomorrow when I get a chance.
I have finally done it!! Thank you for all your help.
My process was in the end:
1. Rip DVD to Mac in .VOB format using MacTheRipper.
2. Use Handbrake to convert VOB file to MP4.
3. Use QuickTime Pro to convert .MP4 to .WAV.
4. Open WAV in Audacity and split the tracks up.
I think I've found the longest way around something this simple!
Again, thanks for that I can now listen to my DVD on the move. One last question, the WAV files are a pretty hefty 60mb each, will this give the same kind of quality as an Apple Lossless file? Should I convert to lossless? Or seeing as I've done all this converting should I convert the WAV to AAC?
Basically, is it worth keeping the format in WAV, lossless or AAC?!
Good stuff! I think you could have skipped a step by just using Handbrake to rip the DVD to MP4, but it don't really matter!
Best bet is to use lossless - this will compress the file but won't lose any of the detail.