I've created a music visualizer, but it won't play 75% of my music. I've been trying to figure it out and I think it's not playing the songs I downloaded on iTunes. The error is NullPointerException and is highlighting when I try and call any beat detection methods (isKick, isHat, isSnare,bufferSize...) Anyone else have this problem or is there a way to keep from getting the error or expand the music-playing capabilities of Minim?