Sound Response (beginner needing serious help!)

My professor wants us to create a sound responsive work - in a zip folder, he included 

1.) SoundRespond.pde :

2. class SoundRespond { // Define a class with custom name
3. 
   
4.   import ddf.minim.*; // Variables and library imports
5.   private Minim minim;
6.   private AudioInput input;
7. 
   
8.   SoundRespond(PApplet myApplet) { //A constructor, necessary part of a class
9. 
   
10.     minim = new Minim (myApplet);
11.     input = minim.getLineIn (Minim.STEREO, 512);
12.   }
13. 
    
14.   float adding( float _upperRange) { // Function for sound response
15.     ////////////sound stuff///////
16.     float volumeValue = input.mix.level () * 250;
17.     volumeValue = constrain(volumeValue, 0, 100);
18. 
    
19.     volumeValue = map(volumeValue, 0, 100, 0, _upperRange);
20.     //println(volumeValue);// uncomment to debug only, else leave comment
21.     ////////sound stuff end////////
22.     return volumeValue;
23.   }
24. 
    
25. 
    
26. }

2.) His example sketch:

2. //  1) +++++ To make a sketch sound responsive the first step is to put the SoundRespond.pde file in the same folder
3. //with the sketch you are working on.
4. //++++++++++++++++++++++++++++++++
5. 
   
6. //  2) +++++ The second step is to copy the line below into your sketch above void setup() +++++
7. SoundRespond mySoundRespond;
8. //+++++++++++++++++++++++++++++++
9. 
   
10. float diam =60;   //diameter of the circle
11. float xPos = 0;   //the position of the circle left to right on x axis
12. float yPos = 200; //the position of the circle to to bottom on y axis
13. float speed = 3;  // how many pixels the circle will move with each frame
14. float sndChng;
15. 
    
16. void setup() {
17.   size(500,500);
18.   //  3) +++++ The third step is to copy the line below into your sketch below size(width,height);  +++++
19.   // between the curly brackets of of setup()
20.   mySoundRespond = new SoundRespond(this);
21.   //++++++++++++++++++++++++++++++++++
22.   smooth();
23. }
24. 
    
25. void draw() {
26.   background(255);  // redraw the background each frame to erase the previous circle
27. 
    
28.   // Use values to draw an ellipse
29.   noStroke();
30.   fill(#831919);
31.   ellipse(xPos,yPos,diam,diam);
32.   
33.     //  4) +++++ The forth step is to choose a variable of something you want to change with sound  +++++
34.   // this has to be between the curly brackets of of draw().
35.   // Copy and paste "mySoundRespond.adding(value);" and put a number in the place of the word ""value".
36. 
    
37.   sndChng = mySoundRespond.adding(5);
38. 
    
39.   //The number determines the amount of the sound response effect. 
40.   //For speed changes try 2.0-5.0 to start, size changes can be much larger numbers.
41.   //++++++++++++++++++++++++++++++++++
42. 
    
43. //must multiply speed by sndChng! adding does not work!!
44. //uncomment constrain() below to keep circle moving
45. //sndChng = constrain(sndChng,1,10);
46.   xPos = xPos + (speed*sndChng);
47. 
    
48. 
    
49.   println("xPos " + xPos);
50.    println("speed " + speed);
51.   if ((xPos > width) || (xPos < 0)) {
52.    speed = speed * -1;
53.   }
54.  
55.  
56. }

I followed his first few instructions, copying the folder into my new sketch folder. In creating my own sketch, as well as trying to run this example, I received a "Found one too many { characters without a } to match it." message with the 

1.   import ddf.minim.*; // Variables and library imports

line highlighted in the SoundRespond file. I've been scanning this over and over - I cannot find a source for this error! Any suggestions on what I might be reading wrong?