Most people want to do the opposite, keep the music and get rid of the
vocals.
You can Google for 'karaoke software'. You'll get a bunch of hits for
freeware, trialware of full versions of software, enough to download and
play around without costing you any money. Many of them will 'delete center
channel'. which removes the 'center channel', containing vocals. I haven't
seen any that do the opposite, extracting the center channel.
Unfortunately, most CDs, .avi, MP3, etc. are recorded in stereo, without a
center channel, or vocal track. So running a stereo track through this type
of software gives less than satisfactory results, since the vocals share the
same frequency as many instruments, you lose a lot of the music, too.
Do want to say forget it, but in addition to using Adobe Audition, Sonic
Foundry and several other sound editors I own, I spent a week searching,
downloading, and trying different software in the attempt to remove vocals
from a song I was working on for a school project. Nothing worked..... In
the end, I wound up using a MIDI version of the song. Not as good at the
original music, but better than the results I could produce.
HTH
