# Minim Loop Synchronization
**URL:** https://discourse.processing.org/t/minim-loop-synchronization/8261
**Category:** Libraries
**Created:** [February 10, 2019, 10:30am UTC](https://discourse.processing.org/t/minim-loop-synchronization/8261 "2019-02-10T10:30:27Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@spaceHolder](https://discourse.processing.org/u/spaceHolder)
#### Post date: [February 10, 2019, 10:30am UTC](https://discourse.processing.org/t/minim-loop-synchronization/8261/1 "2019-02-10T10:30:27Z")
Hey there! This is my first post here so please excuse me if it’s in the wrong place.
I’m thinking of putting together a really simple little 4 track looping pedal type program using minim but I’m not quite sure if there’s a way to synchronize the looped playback of multiple audio files of the same length. Is there a way to listen for the end/beginning of a file’s loop and run a function when that happens?
---
### Author:  [@kll](https://discourse.processing.org/u/kll)
#### Post date: [February 10, 2019, 12:45pm UTC](https://discourse.processing.org/t/minim-loop-synchronization/8261/2 "2019-02-10T12:45:15Z")
if you **not** use the “loop” function
and make with
- a little logic and
- check on player position
your own auto play you have full control
and can add graphic features…
example for a easy two song auto play
```auto
// https://discourse.processing.org/t/minim-loop-synchronization/8261
import ddf.minim.*;
Minim minim;
AudioPlayer player1, player2;
int play = 0; // 1 2
void setup() {
size(512, 200, P3D);
minim = new Minim(this);
player1 = minim.loadFile("groove1.mp3");
player2 = minim.loadFile("groove2.mp3"); // i make just a rename and a copy from original example
}
void draw() {
background(200, 200, 0);
// _____________________________________________________________________ graphic position info
float pos1x = map(player1.position(), 0, player1.length(), 0, width);
stroke(0, 0, 200);
line(pos1x, height/2, pos1x, height/2 -20);
float pos2x = map(player2.position(), 0, player2.length(), 0, width);
stroke(200, 0, 200);
line(pos2x, height/2, pos2x, height/2 +20);
// _____________________________________________________________________ text info
if ( player1.isPlaying() ) text("song 1", 10, 20 );
else if ( player2.isPlaying() ) text("song 2", 10, 20 );
else text("press a key to start", 10, 20);
// _____________________________________________________________________ play next auto at end
if ( play == 1 && ( player1.position() == player1.length() ) ) song2();
if ( play == 2 && ( player2.position() == player2.length() ) ) song1();
}
void song1() {
play = 1;
player1.rewind();
player1.play();
}
void song2() {
play = 2;
player2.rewind();
player2.play();
}
void keyPressed() { // ___________________________________________________ manual start required
song1();
}
```
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### Author:  [@jeremydouglass](https://discourse.processing.org/u/jeremydouglass)
#### Post date: [February 15, 2019, 6:07pm UTC](https://discourse.processing.org/t/minim-loop-synchronization/8261/3 "2019-02-15T18:07:23Z")
> [@spaceHolder](#):
>
> looping pedal type program
Rather than AudioPlayer, you might be interested in using Sampler – depending on your loop length and what effects you have in mind (like if you want to be able to do layering).
[http://code.compartmental.net/minim/sampler\_class\_sampler.html](http://code.compartmental.net/minim/sampler_class_sampler.html)
You might also be interested in past work. It would probably need to be updated for the current minim library and Processing 3.x:
> **[GitHub - youandhubris/SuperLooper: \[Processing, Minim\] An audio looper.](https://github.com/youandhubris/SuperLooper)**
>
> \[Processing, Minim\] An audio looper. Contribute to youandhubris/SuperLooper development by creating an account on GitHub.