I did search using Google and we are on the #1 site under "Vocal Removal" and we were listed on the Very first site in a Review recommending our software.
The software does work, it is all about your Audio and how you got the files. If they are not removed from a CD in .wav format then you have little chance of making it sound good.
Here is the Link to the Search I did:
http://www.google.com/search?sourcei...cal+Removal%22