Home Movie Editing Software Recommendations?

I received a home video from a friend of mine, and while the overall video is neat (showing me the sights of the city, etc) there's an awful lot of profanity in the one scene. (Enough to make a sailor ask "Do you kiss your mother with that mouth?!")
Is there any software, free or paid, that will allow me to cut out audio, or even a brief segment, but keep the rest of the video?
She burnt it on a DVD-R, and was going to send it on a DVD-RW (which I thought would've been editable, but just chapters, etc.)
Anyone got any tips? I'd really hate to throw out the entire thing just because of one stupid segment. =\
Is there any software, free or paid, that will allow me to cut out audio, or even a brief segment, but keep the rest of the video?
She burnt it on a DVD-R, and was going to send it on a DVD-RW (which I thought would've been editable, but just chapters, etc.)
Anyone got any tips? I'd really hate to throw out the entire thing just because of one stupid segment. =\