my music in 20 seconds

How to generate a 20 second mix of all your music in iTunes...

Download my music in 20 seconds

As mentioned previously i've been interested in how to navigate audio content, be it an iTunes collection or a radio network, and I talked about automatically generating representative samples of music. The iTunes signature maker seems to do just this. First it identifies some representative tracks (e.g. most played or top rated), it then does an FFT on sections of each track and, I think, uses this to create a series of spectrally similar excerpts, one from each track. It then cross-fades these together using varying lengths of each track. The application itself is a signed Java applet but note that you do have to give it permission to read your hard drive. And there seems to be GPL'd source code so I might have a play when I get a chance. I wonder how it works on speech radio?