diff --git a/.vscode/settings.json b/.vscode/settings.json
new file mode 100644
index 0000000..0966402
--- /dev/null
+++ b/.vscode/settings.json
@@ -0,0 +1,7 @@
+{
+    "files.associations": {
+        "sdl.h": "c",
+        "time.h": "c",
+        "unistd.h": "c"
+    }
+}
\ No newline at end of file
diff --git a/1sec.wav b/1sec.wav
new file mode 100644
index 0000000..2f3bfdb
Binary files /dev/null and b/1sec.wav differ
diff --git a/a.out b/a.out
deleted file mode 100755
index 0a9d772..0000000
Binary files a/a.out and /dev/null differ
diff --git a/compilation.sh b/compilation.sh
index 8286cfa..a44b2f3 100644
--- a/compilation.sh
+++ b/compilation.sh
@@ -1 +1,2 @@
-ocamlfind ocamlopt -linkpkg -package unix -linkpkg -package graphics main.ml
\ No newline at end of file
+ocamlfind ocamlopt -linkpkg -package unix -linkpkg -package graphics -thread -package threads -linkpkg main.ml -o pinball
+gcc playsound.c -lSDL2 -lSDL2_image -o sound
\ No newline at end of file
diff --git a/main.cmi b/main.cmi
index 8c810a3..764570c 100644
Binary files a/main.cmi and b/main.cmi differ
diff --git a/main.cmx b/main.cmx
index a47e173..42b02b3 100644
Binary files a/main.cmx and b/main.cmx differ
diff --git a/main.ml b/main.ml
index 23c0b9f..67c853d 100644
--- a/main.ml
+++ b/main.ml
@@ -40,6 +40,18 @@ type sphere = {
   score : int ;
 } ;;
 
+type ball = {
+  radius : float ;
+  mass : float ;
+  rgb : int ;
+  xy : pt_2d ;
+  v : pt_2d ;
+  a : pt_2d ;
+  fres : pt_2d ;
+} ;;
+
+(* --- *)
+
 let default_polygon = {
   vertexes = [||] ;
   rgb = 0 ;
@@ -63,25 +75,57 @@ let default_sphere = {
   score = 0 ;
 } ;;
 
-type ball = {
-  radius : float ;
-  mass : float ;
-  rgb : int ;
-  xy : pt_2d ;
-  v : pt_2d ;
-  a : pt_2d ;
-  fres : pt_2d ;
-} ;;
-
-let univ_dt = 0.05 ;;
-let univ_friction = 0.8 ;;
 let univ_g = 800.0 ;;
 let pi = 3.14159265358979343 ;;
 
+let winBL = {
+  x = 0. ;
+  y = 0. ;
+} ;;
+
+let winTR = {
+  x = 1200. ;
+  y = 800. ;
+}
+
+let winball = {
+  x = 750. ;
+  y = 500. ;
+}
+
 let gforce = {x = 0. ; y = -. univ_g} ;;
 
 let score = ref 0 ;;
 
+(* ------------------------------------------------------------------------------------- *)
+(* ------------------------------------------------------------------------------------- *)
+(* WALUIGI_TIME Threads *)
+
+let n_threads = 8 ;;
+
+let beep_boop = Array.make n_threads false ;;
+let beep_id = ref 0 ;;
+
+let playbeep id =
+  while true do
+    if beep_boop.(id) then begin
+      beep_boop.(id) <- false ;
+      ignore (Unix.system "./sound 1sec.wav") ;
+    end;
+    Unix.sleepf 0.005 ;
+  done;;
+
+let beep_list = Array.init n_threads (fun k -> Thread.create playbeep k) ;;
+
+(**)
+
+let play_music () =
+  while true do
+    ignore (Unix.system "./sound 1sec.wav") ;
+  done;;
+
+let theme_thr = Thread.create play_music () ;;
+
 (* ------------------------------------------------------------------------------------- *)
 (* ------------------------------------------------------------------------------------- *)
 (* WALUIGI_TIME Arithmetical operations *)
@@ -332,6 +376,9 @@ let update_ball_data (b : ball) (polys : polygon array) (spheres : sphere array)
     if is_collision_s b spheres.(s) dt then begin
       score := !score + spheres.(s).score ;
 
+      beep_boop.(!beep_id) <- true ;
+      beep_id := (!beep_id+1) mod n_threads ;
+
       (* apply normal reaction force *)
       let proj_n = vect_normalize_2D (vect_diff_2D b.xy spheres.(s).center) in
       let reaction_force_2 = vect_mult_2D proj_n (univ_g *. b.mass *. (vect_dot_product_2D (vect_normalize_2D gforce) proj_n)) in
@@ -363,6 +410,11 @@ let update_ball_data (b : ball) (polys : polygon array) (spheres : sphere array)
   b.xy.x <- b.xy.x +. b.v.x *. dt ;
   b.xy.y <- b.xy.y +. b.v.y *. dt ;;
 
+let update_balls (bl : ball array) (polys : polygon array) (spheres : sphere array) (dt : float) =
+  for b = 0 to Array.length bl -1 do
+    update_ball_data bl.(b) polys spheres dt
+  done ;;
+
 (* ------------------------------------------------------------------------------------- *)
 (* ------------------------------------------------------------------------------------- *)
 (* WALUIGI_TIME Graphics fcts *)
@@ -462,6 +514,11 @@ let draw_ball (b : ball) =
   set_line_width 4 ;
   draw_circle (int_of_float b.xy.x) (int_of_float b.xy.y) (int_of_float b.radius) ;;
 
+let draw_all_balls (bs : ball array) =
+  for k = 0 to Array.length bs -1 do
+    draw_ball bs.(k)
+  done ;;
+
 (* ------------------------------------------------------------------------------------- *)
 (* ------------------------------------------------------------------------------------- *)
 (* WALUIGI_TIME Misc fcts *)
@@ -509,6 +566,9 @@ let create_sphere (x00 : int) (y00 : int) (rd : float) (rest : float) (pts : int
     score = pts ;
   } ;;
 
+let generate_pinballs (count : int) (r : float) (x0 : int) (y0 : int) (m : float) (red : int) (green : int) (blue : int) =
+  Array.init count (fun k -> create_ball r x0 y0 m red green blue) ;;
+
 (* ------------------------------------------------------------------------------------- *)
 (* ------------------------------------------------------------------------------------- *)
 (* WALUIGI_TIME Edition functions *)
@@ -576,7 +636,7 @@ let simulate (data : polygon dynamic) (dats : sphere dynamic) =
   open_graph " 1200x800" ;
   set_window_title "WAH" ;
 
-  let pinball = create_ball 25.0 600 800 0.15 169 169 169 in
+  let pinballs = generate_pinballs 3 20.0 600 700 0.15 255 255 0 in
   let stime = Unix.gettimeofday () in
   let ctime = ref (Unix.gettimeofday ()) in
 
@@ -596,7 +656,7 @@ let simulate (data : polygon dynamic) (dats : sphere dynamic) =
     for d = 0 to dats.len -1 do
       draw_sphere dats.tab.(d)
     done;
-    draw_ball pinball ;
+    draw_all_balls pinballs ;
 
     set_color (rgb 128 128 32) ;
     draw_float 25 770 (round (!ctime -. stime) 3) 25 ;
@@ -606,7 +666,7 @@ let simulate (data : polygon dynamic) (dats : sphere dynamic) =
 
     let __end = Unix.gettimeofday () in
     ctime := !ctime +. (__end -. __start) ;
-    update_ball_data pinball data.tab dats.tab (__end -. __start) ;
+    update_balls pinballs data.tab dats.tab (__end -. __start) ;
   done;
 
   close_graph () ;;
@@ -630,7 +690,6 @@ dyn_add spheres (create_sphere 1000 400 20. 1. 5 220 32 220) ;;
 dyn_add spheres (create_sphere 50 200 15. 1. 20 255 255 32) ;;
 dyn_add spheres (create_sphere 1150 200 15. 1. 20 255 255 32) ;;
 
-
 simulate polygons spheres ;;
 (* 
 let create_polygon (arr : (int * int) array) (rest : float) (pts : int) (red : int) (green : int) (blue : int) 
diff --git a/main.o b/main.o
index 59e6c58..8ae798e 100644
Binary files a/main.o and b/main.o differ
diff --git a/pinball b/pinball
new file mode 100755
index 0000000..c7df3b0
Binary files /dev/null and b/pinball differ
diff --git a/playsound.c b/playsound.c
new file mode 100644
index 0000000..d9701a0
--- /dev/null
+++ b/playsound.c
@@ -0,0 +1,23 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <unistd.h>
+#include <assert.h>
+#include <SDL2/SDL.h>
+
+int main(int argc, char** argv) {
+    assert(argc == 2);
+    if(SDL_Init(SDL_INIT_AUDIO)) {fprintf(stderr, "cannot initialize audio");exit(1);}
+    SDL_AudioSpec wavSpec;
+    Uint32 wavLength;
+    Uint8 *wavBuffer;
+    SDL_LoadWAV(argv[1], &wavSpec, &wavBuffer, &wavLength);
+    SDL_AudioDeviceID deviceId = SDL_OpenAudioDevice(NULL, 0, &wavSpec, NULL, 0);
+    int success = SDL_QueueAudio(deviceId, wavBuffer, wavLength);
+    SDL_PauseAudioDevice(deviceId, 0);
+    usleep((int)((wavLength)/88200.0*100000.0)) ;
+    SDL_CloseAudioDevice(deviceId);
+    SDL_FreeWAV(wavBuffer);
+    SDL_Quit();
+    return 0;
+}
+// yummy
\ No newline at end of file
diff --git a/sound b/sound
new file mode 100755
index 0000000..9734e11
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