title: Android mp3 analysis
body: <p>I'm making a music player for android and I would like to get the average BPM (maybe also frequencies or tones) of a song BEFORE playing it, so I can show the user some info about the song, I know I probably have to open a stream and apply some maths to it to get the data I need, but I don't know how to act, can anyone help me?</p>