Wondering how to download mp3 without a p2p (peer to peer) program or how to download music files using google? Well, that´s not hard, just keep reading.

1- Use the command line: intitle: "index.of" (mp3|mp4) Green.Day -html -htm -php -asp
2- Change Green.Day for whatever music file you are looking for.
3- Finally Download and have fun.
4- If you don´t find anything try Mp3 Realm, it is a cool site with some links to mp3s, and the best thing is that you can actually preview your music before downloading.
5- There is this other great site too called Esfresh, you can look for your favorite artists, watch their music videos online and at the same time you can read their lyrics, that´s just great isnt´t it?