Android: Converting phone sound file to raw data

I would like to take the mus开发者_如何学JAVAic files from my phone (mp3 mostly) and convert them to raw data that FFT can be done on. Is there anyway to do this by using the android/java framework or do I need to integrate something like LAME to decode the mp3?

Your going to need LAME to decode this to a file, you could have the Android system decode it for you but it would just go to the speakers unless you used kernel hacks to allow sending it direct to file.