M00O software has an mp3 extractor program here -
http://www.moo0.com/software/VideoToAudio/
It let's you extract mp3 audio from video files. I haven't tried it myself but I've used some of their other software.
Once you've extracted the audio, you should be able to use a free audio editing program to break the stream down in the way you want.
Did you ever heard of FFmpeg? It does ALL that and MUCH MORE!
More than you can even imagine, I suppose. And I'm not overestimating it.
The Big Useful List Of Free Useful Programs To Use Usually For Free
For all your audio/video tasks:
FFmpeg.
Nothing can beat it and you do not have to pay for it, but a donation is appreciated.
For all your movies and musics watching activities #1:
VLC Media Player.
For average users, I have to agree it is definitely the best and most complete multimedia player. Free to use and play, it can still be the preferred choice for enthusiast people. It offers both GUI and Command line interface versions. It can do many things, from watching to streaming. It can record streams as well. Free to use and share, donations are appreciated.
For all your movies and musics watching activities #2:
MPlayer.
Command line based multimedia player, it is very powerful and complete. It has great performance and many useful settings. It is current my favorite player. Multi platform support. There are also various GUI versions based on MPlayer if you prefer. Free to use and share, donation is appreciated.
For all your e-mail needs:
Mozilla Thunderbird.
Mozilla Thunderbird is a mail client. One of the best alternative to Microsoft Outlook but with much more advantages.
For you music playback and organization:
DeadBeef /
Audacious /
Clementine.
If you wanted something like Winamp, Windows Media Player of foobar then your hunt is over. Any of the 3 above you give you everything you want and you will be able to organize your music in a very organized way. Did you like them? Donate if you can to help them make it even better.
For all your audio editing needs:
Audacity.
You can edit all your audio precisely with Audacity and it also has a wide range of features. It is very good and popular!
For all your CD Ripping tasks:
CD paranoia.
Nothing can beat it, EAC is good but its biggest defect is that it is Windows ONLY. Free to use, but a donation is appreciated.
For all your office tasks:
Apache OpenOffice or
LibreOffice.
Nothing can beat them, MS Office is good but it will cost you a kidney or a liver and let's face it: It has childish interface while OpenOffice and LibreOffice can be used and shared for free and they're almost completely compatible with MS Office documents. While MS Office will limit you to Windows only, with OpenOffice.org or LibreOffice you can create and share your documents on other operating systems as well. Free to use, but a donation is appreciated.
For all your graphics work based on pixels:
GIMP.
Let's face it, Adobe Photoshop is only well known and much used because of piracy, Adobe has to thank all the piracy it got till here.
And I doubt the average user will pay thousands of US dollars just to do basic or even more advanced work with it. Unless said user is rich or sold his body organs.
GIMP will do most things, if not all, Photoshop can do and with the big advantage it won't cost you a liver, a kidney or even worse your children to use it. Absolutely free to use, but if you can donate any amount to help the project, even a few cents is appreciated. Let's encourage those great developers!
For all your RAW photography needs:
RawTherapee.
I have used already it is great. Support for newer cameras are added quite fast and many bugs are fixed every now and then.
For all your vector graphics work:
InkScape.
Forget about Adobe Illustrator or CorelDraw. You can create absolutely everything you can imagine with InkScape. Still doubt!? See for yourself the amazing works PROFESSIONAL and AMATEUR people are creating with this free, open source and cross platform vector graphics program:
https://inkscape.org/en/community/gallery/. Warning: You will be amazed!
For all your archiving/backup and file compression purposes:
GNU Tar /
GNU Gzip /
XZ Utils /
Bzip2.
You won't need anything more. Excellent compression ratio that is freely available in all platforms you can imagine. Obviously, you can decompress your files later with these same tools.
For all your Sega Genesis / MegaDrive / Master System emulation needs:
KegaFusion /
Gens.
You will be able to play all your Sega Genesis / MegaDrive / Master System console games with these excellent emulators. KegaFusion is not open source but it is freely available and has some cool features.
For all your video editing tasks:
Kdenlive.
A great video editor for Linux/Unix systems.
For all your computing purposes:
GNU Linux based Operating System.
Let's face it, average users don't need Windows to be happy or do their work. Are you sick of defragmenting your Windows disks or decreased system performance over time, bloating and viruses!? On Linux you don't have to worry about all of this and better yet: You don't have to pay hundreds of dollars for it, and basic support is freely available virtually anywhere. And forget about all other limitation and absurd rules Microsoft applies to you.
All the programs cited above are free to use, open source and cross platform unless otherwise stated. Why pay for software you are not sure will stay alive forever!? If open source development is stopped it can be resumed by ANYONE.
Did you know? About 100% of average users can be more than happy without Windows or proprietary software.
The main problem with proprietary / closed source softwares (e.g. Microsoft Windows, etc...) is that you don't know what's in there, it can have malicious code and back doors for spying you. That's another risk and problem. Open source software is more important than you imagine.
Then please, do not recommend your friends to download a pirated/cracked or any proprietary software (especially closed source) if he/she does not need it. Let's make the software world better!