Lies, you can pull the vocals off of almost any track, and if you can't for some reason, you can easily eq them to the point that they are not audible anymore. In general, vocals are easy to get out, as they are almost all mid range to high eq, plus always dead center. Any program that's ACTUALLY for editing, NOT Ableton, Reason, etc, should be able to do this.
Ok so you could pay for ProTools, Cubase, Nuendo, etc. Or you could go ugly free with Cool Edit yadda yadda. Here's the winnar...
It's open source, constantly being updated, and best of all, free. All you have to do is sit for 5 seconds while it asks you to buy. It's output matches any program you'd pay bundles for. It's easy to use.
http://www.reaper.fm/download.php