This site offers a sweet video tutorial that teaches you how to use Google to find MP3, MP4, AVI, and other music and video files available for download for free on the internet. This basically makes Google act as a P2P client. The video gives the long explanation, but here's the shortcut if you want to get started right away.

Go to google and perform a search of the following format:

intitle:"index.of" (<file type 1>|<file type 2>|...) Song.name.words

where <file type> entries are replaced by the formats you are looking for, like MP3, MP4, ACC, etc and Song.name.words is the name of the song with the words separated by periods. So, an actual example of this would be:

intitle:"index.of" (MP3) welcome.to.the.black.parade

Try it now... it actually works, you'll be playing songs, video, and other content in less than a minute for free without the risk of getting caught by using P2P software.