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you can always rip the dvd in handbreak, then quicktime pro export the audio to itunes
 
toast 7 can do this easily from the DVD section of the media browser.

can export audio from titles in a DVD to aiff, wav, m4a, ogg or flac.
 
I tried this with Toast Titanium 6, but no luck. I don't think it supports audio ripping. I finally got it done with Audio Hijack.
 
I recently had this question, too, since I wanted to rip some of the DualDiscs that I bought into iTunes. I asked it over at the MacWorld forums. Here's the answer that I got:
http://www.macworld.com/forums/ubbthreads/showthreaded.php?Cat=&Board=UBB13&Number=402115

This is a good solution if you're concerned about lossy rips. I use my Mac Mini as a media server, and rip everything losslessly, so I was hoping to avoid the generational loss that Audio Hijack would introduce.

/nm
 
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