diff --git a/public/audio/ce-livre-est-une-facon.mp3 b/public/audio/ED-01-ce-livre-est-une-facon.mp3
similarity index 100%
rename from public/audio/ce-livre-est-une-facon.mp3
rename to public/audio/ED-01-ce-livre-est-une-facon.mp3
diff --git a/public/audio/un-don-qui-se-mesure.mp3 b/public/audio/ED-02-un-don-qui-se-mesure.mp3
similarity index 100%
rename from public/audio/un-don-qui-se-mesure.mp3
rename to public/audio/ED-02-un-don-qui-se-mesure.mp3
diff --git a/public/audio/les-asymetries.mp3 b/public/audio/ED-03-les-asymetries.mp3
similarity index 100%
rename from public/audio/les-asymetries.mp3
rename to public/audio/ED-03-les-asymetries.mp3
diff --git a/public/audio/inverser-les-flux.mp3 b/public/audio/ED-04-inverser-les-flux.mp3
similarity index 100%
rename from public/audio/inverser-les-flux.mp3
rename to public/audio/ED-04-inverser-les-flux.mp3
diff --git a/public/audio/ainsi-soit-il.mp3 b/public/audio/ED-05-ainsi-soit-il.mp3
similarity index 100%
rename from public/audio/ainsi-soit-il.mp3
rename to public/audio/ED-05-ainsi-soit-il.mp3
diff --git a/public/audio/la-croissance-une-option.mp3 b/public/audio/ED-06-la-croissance-une-option.mp3
similarity index 100%
rename from public/audio/la-croissance-une-option.mp3
rename to public/audio/ED-06-la-croissance-une-option.mp3
diff --git a/public/audio/monnaie-libre-essence.mp3 b/public/audio/ED-07-monnaie-libre-essence.mp3
similarity index 100%
rename from public/audio/monnaie-libre-essence.mp3
rename to public/audio/ED-07-monnaie-libre-essence.mp3
diff --git a/public/audio/des-cercles-qui-se-croisent.mp3 b/public/audio/ED-08-des-cercles-qui-se-croisent.mp3
similarity index 100%
rename from public/audio/des-cercles-qui-se-croisent.mp3
rename to public/audio/ED-08-des-cercles-qui-se-croisent.mp3
diff --git a/public/audio/coder-la-liberte.mp3 b/public/audio/ED-09-coder-la-liberte.mp3
similarity index 100%
rename from public/audio/coder-la-liberte.mp3
rename to public/audio/ED-09-coder-la-liberte.mp3
diff --git a/site/bookplayer.config.yml b/site/bookplayer.config.yml
index 41f01ab..72fe9e3 100644
--- a/site/bookplayer.config.yml
+++ b/site/bookplayer.config.yml
@@ -10,7 +10,7 @@ songs:
   - id: ce-livre-est-une-facon
     title: "Ce livre est une façon"
     artist: Yvv
-    file: /audio/ce-livre-est-une-facon.mp3
+    file: /audio/ED-01-ce-livre-est-une-facon.mp3
     duration: 718
     lyrics: |
       [Intro]
@@ -105,7 +105,7 @@ songs:
   - id: un-don-qui-se-mesure
     title: "Un don qui se mesure"
     artist: Yvv
-    file: /audio/un-don-qui-se-mesure.mp3
+    file: /audio/ED-02-un-don-qui-se-mesure.mp3
     duration: 589
     lyrics: |
       [Intro]
@@ -178,7 +178,7 @@ songs:
   - id: les-asymetries
     title: "Les asymétries"
     artist: Yvv
-    file: /audio/les-asymetries.mp3
+    file: /audio/ED-03-les-asymetries.mp3
     duration: 727
     lyrics: |
       Les asymétries
@@ -295,7 +295,7 @@ songs:
   - id: inverser-les-flux
     title: "Inverser les flux"
     artist: Yvv
-    file: /audio/inverser-les-flux.mp3
+    file: /audio/ED-04-inverser-les-flux.mp3
     duration: 610
     lyrics: |
       Inverser les flux
@@ -423,7 +423,7 @@ songs:
   - id: ainsi-soit-il
     title: "Ainsi soit-il"
     artist: Yvv
-    file: /audio/ainsi-soit-il.mp3
+    file: /audio/ED-05-ainsi-soit-il.mp3
     duration: 545
     lyrics: |
       Ainsi soit-il
@@ -487,7 +487,7 @@ songs:
   - id: la-croissance-une-option
     title: "La croissance, une option ?"
     artist: Yvv
-    file: /audio/la-croissance-une-option.mp3
+    file: /audio/ED-06-la-croissance-une-option.mp3
     duration: 510
     lyrics: ""
     tags: [croissance, monnaie, questionnement]
@@ -495,7 +495,7 @@ songs:
   - id: monnaie-libre-essence
     title: "Monnaie libre essence"
     artist: Yvv
-    file: /audio/monnaie-libre-essence.mp3
+    file: /audio/ED-07-monnaie-libre-essence.mp3
     duration: 475
     lyrics: ""
     tags: [monnaie libre, TRM, June]
@@ -503,7 +503,7 @@ songs:
   - id: des-cercles-qui-se-croisent
     title: "Des cercles qui se croisent"
     artist: Yvv
-    file: /audio/des-cercles-qui-se-croisent.mp3
+    file: /audio/ED-08-des-cercles-qui-se-croisent.mp3
     duration: 496
     lyrics: |
       Hymne à la monnaie libre
@@ -569,7 +569,7 @@ songs:
   - id: coder-la-liberte
     title: "Coder la liberté"
     artist: Yvv
-    file: /audio/coder-la-liberte.mp3
+    file: /audio/ED-09-coder-la-liberte.mp3
     duration: 376
     lyrics: |
       Coder un rêve