Visualizer dont work

Hey i got a problem with my visualizer

When i use this code I can select a MP3 file but the Visualizer didn´t show the line and only play the Sound

  import ddf.minim.*;
  import ddf.minim.analysis.*;
  import ddf.minim.effects.*;
  import ddf.minim.signals.*;
  import ddf.minim.spi.*;
  import ddf.minim.ugens.*;
  String path;

  Minim minim;
  AudioPlayer Player;
  int farbe;
  PImage playPause;
  PImage hintergrund;

  void setup() {
    size(500,400);
    background(0);
    minim = new Minim(this);
    //Player = minim.loadFile(path); // Spielt die Mp3 datei ab
    //Player.loop(); // Wiederholt den aktuellen Song
    farbe = 0;
    smooth();
    playPause = loadImage("play3.jpg");
    hintergrund = loadImage("hintergrund2.jpg");
  }

  void selected(File song){
    path = song.getAbsolutePath();
    }

  void interrupt(){
    while (path == null){
      loop();
    }
     noLoop();
    }

  void draw()  {
    selectInput("Suche einen Song aus","selected");
    interrupt();
    background(0);
    Player = minim.loadFile(path); // Spielt die Mp3 datei ab
    Player.play();
    image(hintergrund,0,0);
    image(playPause,25,25);
    translate(width/2, height/2);
    rotate(radians(frameCount % 360 * 2));
    colorMode(HSB);
    stroke(farbe, 255, 255);
    colorMode(RGB);

    for(int j = 0; j < 360; j++){

      if(Player.mix.get(j)*200 > 50) {
        colorMode(HSB);
        stroke(farbe, 255,255);
        colorMode(RGB);
      }
      else {
        colorMode(HSB);
        stroke(farbe,255,255);
        colorMode(RGB);
      }
      line(cos(j)*100, sin(j)*100, cos(j)*abs(Player.left.get(j))*250 + cos(j)*100, sin(j)*abs(Player.right.get(j))*250 + sin(j)*100);
    }

      //for(int i = 0; i < fft.avgSize(); i++){
      //line((i * w)*3, height/1.1, (i * w)*3, height/1.1 - fft.getAvg(i) * 0.5);

    farbe += 2;
    if( farbe > 255)
    {
      farbe = 0;
    }
  // #########MOUSE############
      if (mousePressed && (mouseButton == LEFT)) {
      Player.pause();
    } else if (mousePressed && (mouseButton == RIGHT)) {
      Player.play();
    }

    }

But when i use this code Visualizer show me lines and effects why? here the visualizer got a MP3 in the loadFile but i need a way to choose the mp3 file

      import ddf.minim.*;
      import ddf.minim.analysis.*;
      import ddf.minim.effects.*;
      import ddf.minim.signals.*;
      import ddf.minim.spi.*;
      import ddf.minim.ugens.*;
      String path;

      Minim minim;
      AudioPlayer Player;
      int farbe;
      PImage playPause;
      PImage hintergrund;

      void setup() {
        size(500,400);
        background(0);
        minim = new Minim(this);
        Player = minim.loadFile("bla.mp3"); // Spielt die Mp3 datei ab
        Player.loop(); // Wiederholt den aktuellen Song
        farbe = 0;
        smooth();
        playPause = loadImage("play3.jpg");
        hintergrund = loadImage("hintergrund2.jpg");
      }

     /* void selected(File song){
        path = song.getAbsolutePath();
        }

      void interrupt(){
        while (path == null){
          loop();
        }
         noLoop();
        } */

      void draw()  {
        //selectInput("Suche einen Song aus","selected");
        //interrupt();
        background(0);
       // Player = minim.loadFile(path); // Spielt die Mp3 datei ab
      //  Player.play();
        image(hintergrund,0,0);
        image(playPause,25,25);
        translate(width/2, height/2);
        rotate(radians(frameCount % 360 * 2));
        colorMode(HSB);
        stroke(farbe, 255, 255);
        colorMode(RGB);

        for(int j = 0; j < 360; j++){

          if(Player.mix.get(j)*200 > 50) {
            colorMode(HSB);
            stroke(farbe, 255,255);
            colorMode(RGB);
          }
          else {
            colorMode(HSB);
            stroke(farbe,255,255);
            colorMode(RGB);
          }
          line(cos(j)*100, sin(j)*100, cos(j)*abs(Player.left.get(j))*250 + cos(j)*100, sin(j)*abs(Player.right.get(j))*250 + sin(j)*100);
        }

          //for(int i = 0; i < fft.avgSize(); i++){
          //line((i * w)*3, height/1.1, (i * w)*3, height/1.1 - fft.getAvg(i) * 0.5);

        farbe += 2;
        if( farbe > 255)
        {
          farbe = 0;
        }
      // #########MOUSE############
          if (mousePressed && (mouseButton == LEFT)) {
          Player.pause();
        } else if (mousePressed && (mouseButton == RIGHT)) {
          Player.play();
        }
        }

Please help me guys i need the filepath way for my university plx plx plx :(