Best way to do it is what skurj said.. that way you can index to the parts on DVD that you want to record.
Once its recorded, either saved in individual files for each plane, or if you cut / copy / paste , then you can edit.
I have a Nuendo rig that I use to edit / produce music, and in that I have all the denoisers / declickers, ect that you could need to dream off to clean up and edit the wav files once you have them transferred from DVD.
I edited Mitsu's tankgun sound, beacuse i thought it was too noisy on the reload. And I also have an ols airraid / tornado siren sound that I cleaned up. It's sound pretty good. will post those so you can listen