Hi,
I found a memory leak in AudioRecorder in minim. Quite large actually.
Repeatedly creating and deleting AudioRecorder instances crashes the applet in 30 seconds with a OutOfMemoryError error.
One of my apps was crashing on OutOfMemoryError, and I hunted down the cause of the problem on the repetitive AudioRecorder creations.

I don't know where to file bug reports for minim, so I do it here, which is not the best place I agree. Any advice welcome...

Sample code to reproduce :

/* This app shows that there is a memory problem in AudioRecorder in buffered mode.
There is clearly a memory leak, as the used memory increases all the time.
GC tries to free memory all the time, but still used memory increases and finally crashes with a OutOfMemoryError error.
Changing the buffered mode to false reduces the problem, the memory fills up slower, but it still does. */
 
import ddf.minim.*;

Minim minim;

AudioRecorder recorder = null;
AudioInput in;


void setup() {
 size(512, 200, P2D);
 textMode(SCREEN);
 textFont(createFont("SanSerif", 12));

 minim = new Minim(this);
 in = minim.getLineIn(Minim.STEREO, 2048);
}

void stop() {
 // always close Minim audio classes when you are done with them
 in.close();
 if (recorder != null) {
   recorder.endRecord();
   recorder = null;
 }
 minim.stop();
 
 super.stop();
}

void draw() {
 /* Commenting out the following line fixes the memory problem, so the AudioRecorder is the problem, or at least it seems.. */
 recorder = minim.createRecorder(in, "snd.wav", true);
 
 // display memory
 background(0);
 float freemem = Runtime.getRuntime().freeMemory();
// float maxmem = Runtime.getRuntime().maxMemory();
 float allocmem = Runtime.getRuntime().totalMemory();
 float usedMem = allocmem-freemem;
 float rat = usedMem/allocmem;
 stroke(0,255,0);
 fill(0,255,0);
 text("Memory used ="+str(int(usedMem/1000000))+"Mb alloced mem="+str(int(allocmem/1000000))+"Mb", 100, 100);
 rect(10, int(200*(1. - rat)) , 10, int(200*rat));

}