Well, we're talking about giving advice to someone to "retrieve" a file from sources that aren't exactly legal. Then you are going to rip the audio from something that doesn't belong to you isn't exactly legal as well.
I hang at dvdtalk.com and they don't tolerate such stuff there for obvious reasons. It's best to be vague.
Now, if we're talking about how to rip audio for your own personal use from audio sources that you already own (like a cd) then it's okay because it woudl fall under the "fair use" clause. A dvd has been ruled otherwise by the courts. Fair use doesn't apply to dvds apparently. Certainly fair use would not apply to an .mpeg ripped from tv whose rights still belong to Warner Bros.
So, I gave hints and it would seem that he figured it out so that's good.