In message , WinUser
writes:
I used Win 7 movie maker to extract a portion of a .MP4.
Now I want to extract the music to a windows compatible music file.
Then put on my cell phone.

Can something on Windows 7 or XP do this ?

If not, is there a free application to do this?

TIA

As others have said, there are lots; I presume with a name like
"WinUser" you'd prefer a non-command-line one. There are still plenty:
the couple I use on XP are Free Video to Audio Converter and AoA Audio
Extractor. GoldWave (the audio editor) can load (audio from) at least
one movie format, too (so obviously can save it).
--
J. P. Gilliver. UMRA: 1960/1985 MB++G()AL-IS-Ch++(p)Ar@T+H+Sh0!:`)DNAf

Just seen a Dyslexic Yorkshireman wearing a cat flap!