1) Obtain a music editor that can remove the vocals from a song for you. An example is Mixcraft . Download the program . You can try out the program for free.
2) Install the program onto your computer after it finishes downloading by opening the installation icon on your desktop. After you finish installing, you'll want to grab the Extra boy plugin for the program . A plugin is like an extra piece that helps your program do something special. In this case, it will help you remove vocals.
3) Install the Extra boy plugin, then open your Mixcraft program by double-clicking on the shortcut icon on your desktop. Click on the button to load a song and a browse window should appear. Find the song you want to make into an instrumental on your computer through the browse box and double-click on it.
4) Click on the button marked FX and a new screen will appear. Click where it says Extra_boy. Then where it says preset, select Full Spectrum. You can now play your song without vocals. Use File Render to turn this into an MP3 that you can save.
5) Download a program that can remove the voice track on the song through a karaoke program. This works because Karaoke programs will have a method for removing the voice from your music as part of the process. An example is Karaoke CDG.
6) Install the program on your hard drive by opening the installation file after it downloads. Add a song to the project with the add song button or something similar. Click on the remove coals box and click Next to render the song. You can cancel out of the program after that, since that's all you need. You should now have an instrumental version of your song with no vocals.
Try AnalogX Vocal Remover, it works on the same principles that the hardware removers do - that in most instances vocals are equally mixed in both channels, and can identified and therefore removed by simply changing the phase on one channel by 180 degrees. While this won't remove vocals in all instances, it does work in many cases, and can sometimes be used to remove bass or breakbeat sections as well, which I find to be GREAT for sampling! Depending on the effects used on the vocals, sometimes the reverb or ambience of the vocals is left. In order to use the DirectX Vocal Remover, your application must support DirectX Audio Plugins, and must also support either realtime or non-realtime processing (such as Paris, Cakewalk, WaveLab, CoolEdit, etc). Vocal Remover REQUIRES a stereo sound streams, and supports either 16bit or 32bit data types.
In order to use the WinAmp Vocal Remover, you must already have WinAmp installed in your system; it REQUIRES a stereo sound stream, and supports only 16 bit data types.