Removing the vocals from most songs is not a hard task at all and you can do it on your own PC or MAC.
How It All Works
Vocals are normally found in a “center channel.” But since stereo tracks have 2 channels, instruments are not always balanced evenly. So since most engineers mix the vocals in the “center channel”, this should allow you to split the stereo track and invert 1 channel. This will effectively cancel out the vocals, leaving the rest in tact.
Step 1: Remove the Center Channel
Start by launching Audacity and import your song.
Click on the little black arrow next to the track title and go down to Split Stereo Track.
The, just pick either left or right channel, double click to select the entire track.
On the top menu, click Effect and choose Invert.
Click on the title of each track and convert to “mono” as shown below:
Step 2: Export The Results
That is it! Now you can export the finished product to a WAV or mp3 file.
Written for RobLunaMusic.com, Courtesy of The How To Geek website.