Well, let's start.
1 - Choose your copyrighted song.
(http://i50.tinypic.com/o761bm.jpg)
2 - Right click in your song and go to properties.
(http://i48.tinypic.com/t6ax7d.jpg)
3 - In properties go to "Details" window and click in "Remove properties and personal informations" something of type.
(http://i48.tinypic.com/t7zvwl.jpg)
4 - In details window click in the second option. "Remove the following properties from this file" something of type :cc_detective:, click in select all and click in OK.
(http://i47.tinypic.com/52wrp.jpg)
Finally your song don't have copyrights anymore, you can use and upload it in YouTube. You don't will receive any messages of copyrights in your video.
(http://i49.tinypic.com/atvjgz.jpg)
- Le song without copyrights.
N'joy :cc_detective:
NOTES: I don't know if it works in Win XP, I just test in Win Seven, Vista and 8.