If you need to remove the bad words or inappropriate lyrics from a song in order to fix it or censor it, you've come to the right place. I'll tell you how to do just that, and I hope you enjoy this instructable!
Audacity is what I will be using, and can be downloaded here: http://audacity.sourceforge.net/
NOTE: This does not always work for all songs, but it does for most of them.
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Step 1: Open Audacity
If you haven't downloaded it already, download it. It is free. If you have, then open it up to a new project.
Step 2: Drag in the Song
Drag in the song from your desktop, or any folder. You can also drag in the song straight from iTunes.
Step 3: Split the Stereo Track
Go to the upper left of the sound track and click on the drop down arrow next to the name of the song. Click on "Split Stereo Track".
Step 4: Select and Invert the Bottom Track
To do this, double click on the blue part of the lower track. It should turn a darker shade of gray than the other track. Then go to the Effects tab and click on "Invert". This flips around the lower track.
Step 5: Set Both Tracks to Mono
Next go back to the drop down arrow next to the name of the song, and click on "Mono". Do this for both tracks. This sets it so that the tracks won't be mixed.
Step 6: Drag in the Song Again
Drag in the song from your desktop again, or any folder. You can also drag in the song straight from iTunes. Drag it below the two tracks that you already have.
Step 7: Select the Part You Wish to Censor
Click on the track using the zoom tool(found towards the top, it is a picture of a magnifying glass) to zoom in, then select it by switching back to the selection tool(the tool that looks like an I) and selecting the part you wish censor. Make sure that you select the part of the song that you wish to censor only on the bigger track that you just dragged in, not on either of the other two.
Step 8: Mute the Part You Wish to Censor
Go up to the Effects tab after selecting the part you wish to mute. Click on "Amplify". The number should be close to zero. Drag the little pin head thing to -50. That will mute the part you wanted to censor.
Step 9: Export It
Lastly, click the play button to make sure that the vocals are gone. If so, go up to the File tab and click "Export". Once you do this, a box or two may pop up asking you to choose what name you want to export it as. Type in the name you want and press either Ok or Export. You should be good! If your vocals could not be removed, I apologize, but some songs have vocals that can't be removed completely. I wish you the best of luck though!