Audacity...can't find a better place to post this great prog:
is for windows, linux, macs.....

Audacity is a free audio editor.
You can record sounds, play sounds, import and export:
WAV, AIFF, and MP3 files, and more.
Use it to edit your sounds using Cut, Copy and Paste (with unlimited Undo),
mix tracks together, or apply effects to your recordings.
It also has a built-in amplitude envelope editor,
a customizable spectrogram mode and a frequency
analysis window for audio analysis applications.
Built-in effects include Bass Boost, Wahwah, and Noise Removal,
and it also supports VST plug-in effects.
.....vocal remover,tutorials and some more features!

take a read and download:

http://audacity.sourceforge.net/