We both know that you have had a moment in your life when you hear a really good song in YouTube, in some video, or you got linked by your friend or then just something else, but it's on YouTube, not on your computer!
Well, now you don't have to experience that a single time more.
Go download E.M YouTube Video Download Tool, Google it, it's the EntertainmentMatrix one.
Install it, and press FLV Searcher. Find your YouTube video, it's got a built-in browser. When you play it, it should start automatically recording it to an .flv.
When it has finished, press FLV -> Other.
Press New Task and find your .flv.
Convert it, and when it has finished you have an .avi. I think you propably can change the output format somewhere but I couldn't find it
If you got an mp3 or what you changed it to, gratz, you don't need to read anymore.
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So, now you need to convert your .avi to .mp3, omg!
Download AoA Audio Extractor, google it. It's freeware, no need for torrents or anything like that...
Install AoA, and open it. Press Add Files and find your .avi, and set your output directory. Then press the huge 'empty' textless button in the bottom right corner and have fun
Hope you enjoyed the tutorial and managed to find some music from YouTube