I've made a sketch to launch some mp3 files with minim and a button on my arduino. There is a .txt containing sond names, and the program loads those names to play mp3 in a random way. It's simple and it works, but if I put more than 2, 3 mp3, I get this error : 

2. An OutOfMemoryError means that your code is either using up too much memory
3. because of a bug (e.g. creating an array that's too large, or unintentionally
4. loading thousands of images), or that your sketch may need more memory to run.
5. If your sketch uses a lot of memory (for instance if it loads a lot of data files)
6. you can increase the memory available to your sketch using the Preferences window.
7. Exception in thread "Animation Thread" java.lang.OutOfMemoryError: Java heap space
8. at ddf.minim.javasound.FloatSampleBuffer.insertChannel(Unknown Source)
9. at ddf.minim.javasound.FloatSampleBuffer.createChannels(Unknown Source)
10. at ddf.minim.javasound.FloatSampleBuffer.init(Unknown Source)
11. at ddf.minim.javasound.FloatSampleBuffer.initFromByteArray(Unknown Source)
12. at ddf.minim.javasound.FloatSampleBuffer.initFromByteArray(Unknown Source)
13. at ddf.minim.javasound.JSMinim.loadFloatAudio(Unknown Source)
14. at ddf.minim.javasound.JSMinim.getAudioSample(Unknown Source)
15. at ddf.minim.Minim.loadSample(Unknown Source)
16. at ddf.minim.Minim.loadSample(Unknown Source)
17. at voix_led_memoire_bouton.setup(voix_led_memoire_bouton.java:101)
18. at processing.core.PApplet.handleDraw(PApplet.java:2117)
19. at processing.core.PGraphicsJava2D.requestDraw(PGraphicsJava2D.java:193)
20. at processing.core.PApplet.run(PApplet.java:2020)
21. at java.lang.Thread.run(Thread.java:662)

I increased the maximum available memory but still can't load more than 4,5 with 512 Mo. Here is my code :

2. import processing.serial.*;
3. import cc.arduino.*;
4. import ddf.minim.*;
5. 
   
6. Minim minim;
7. AudioSample son[];
8. 
   
9. 
   
10. 
    
11. Arduino arduino;
12. int ledPin = 2;
13. int btn = 3;
14. int r =0;
15. 
    
16. 
    
17. void setup()
18. {
19. 
    
20.   minim = new Minim(this);
21.   String titres[] = loadStrings("titres.txt");
22.   
23.   son = new AudioSample[titres.length];
24.   for (int i=0;i<titres.length;i++){
25.   son[i] = minim.loadSample("musique/"+titres[i]);
26.   }
27.   arduino = new Arduino(this, Arduino.list()[0], 57600);
28.   arduino.pinMode(ledPin, Arduino.OUTPUT);
29.   arduino.pinMode(btn, Arduino.INPUT);
30.   
31. }
32. 
    
33. void draw()
34. {  
35.   String titres[] = loadStrings("titres.txt");
36.   if (arduino.digitalRead(btn) == Arduino.LOW)
37.   {
38.   arduino.digitalWrite(ledPin, Arduino.LOW);
39.     
40.     int mem = r;
41.     while (r==mem)
42.     {
43.     r = int(random(titres.length));
44.     }
45.     
46.   son[mem].stop();
47.   son[r].trigger();
48.   println(titres[r]);
49. 
    
50.   while(arduino.digitalRead(btn) == Arduino.LOW);
51.   }
52.   else 
53.   {
54.   arduino.digitalWrite(ledPin, Arduino.HIGH);
55.   }  
56. }
57. 
    
58. 
    
59. void stop() {
60.   String titres[] = loadStrings("titres.txt");
61.   for (int i=0;i<titres.length;i++){
62.   son[i].close();
63.   }
64.   minim.stop();
65.   super.stop();
66. }
 

Thanks for your help...

I'm new on processing and I've downloaded the voce library. I used the library with the english recognition, but now, because I'm french, I want to use "lium_french_f0". I've downloaded it but I don't know what to do with the files in this folder... 

Can someone explain to me how models work ? 

Thanks you !