attached is a sketch (made with help form arthurG, thanks!) which allows me to pan an audio file left and right, and change its gain. Next thing i want to do is load another sound, controlled by another ellipse. can anyone give me some tips, get me started?

cheers,

josh

2. import ddf.minim.*;
3. import ddf.minim.signals.*;
4. 
   
5. AudioPlayer player;
6. Minim minim;
7. 
   
8. 
   
9. boolean over = false;
10. boolean selected = false;
11. int posX, posY;
12. int offsetX, offsetY;
13. float radius = 25.0f;
14. 
    
15. void setup()
16. {
17.   size(512, 512);
18.   
19.  minim = new Minim(this);
20.   player = minim.loadFile("Kalimba.mp3");
21.   player.play();
22.   
23.   
24.   textFont(createFont("SanSerif", 12));
25.   
26.   posX = width/2;
27.   posY = height/2;
28.   smooth();
29. }
30. 
    
31. void draw()
32. {
33.   background(0);
34.   
35.   strokeWeight (1.0f);
36.   fill(255,155);
37.   
38.   // see waveform.pde for more about this
39. 
    
40.   
41.   if ( player.hasControl(Controller.PAN) )
42.   {
43.     // map the mouse position to the range of the pan
44.     float valPan = map(posX, 0, width, -1, 1);
45.     // if a pan control is not available, this will do nothing
46.     player.setPan(valPan); 
47.     
48.     float valGain = map(posY, 0, height, 6, -48);
49.     player.setGain(valGain);
50.     // if a pan control is not available this will report zero
51.     text("pan : " + player.getPan() , 5, 20);
52.     text("gain : " + player.getGain() , 150, 20);
53.     
54.     if (selected)
55.       strokeWeight (2.0f);
56.     
57.     if (over)
58.       fill (255,255);
59.     
60.     ellipse (posX,posY,radius*2.0f,radius*2.0f);
61.   }
62.   else
63.   {
64.     text("The output doesn't have a pan control.", 5, 20);
65.   }
66. }
67. 
    
68. void stop()
69. {
70.   // always close Minim audio classes when you are finished with them
71.   player.close();
72.   minim.stop();
73.   
74.   super.stop();
75. }
76. 
    
77. void mouseMoved() {
78.   over = false;
79.   if (sqrt(sq(mouseX-posX)+sq(mouseY-posY))<=radius) {
80.     over = true;
81.   }
82. }
83. 
    
84. void mousePressed() {
85.   if (over) {
86.     selected = true;
87.     offsetX = posX-mouseX;
88.     offsetY = posY-mouseY;
89.   }
90. }
91. 
    
92. void mouseReleased() {
93.   selected = false;
94. }
95. 
    
96. void mouseDragged() 
97. {
98.   if (selected) {
99.     posX = max(0,min(mouseX+offsetX,width));
100.     posY = max(0,min(mouseY+offsetY,height));
101.   }
102. }