diff --git a/backend/src/data/timelines.ts b/backend/src/data/timelines.ts
index a924919..2910b76 100644
--- a/backend/src/data/timelines.ts
+++ b/backend/src/data/timelines.ts
@@ -31,7 +31,7 @@ const timelines: {
     timelines: [
         {
             name: "Centurion",
-            songFile: "songs/centurion.m4a",
+            songFile: "songs/centurion.mp3",
             feed: [
                 {
                     timestamp: 0,
@@ -5251,7 +5251,7 @@ const timelines: {
         },
         {
             name: "Totale Isolatie",
-            songFile: "songs/totale_isolatie.m4a",
+            songFile: "songs/Totale_Isolatie.mp3",
             feed: [
                 {
                     timestamp: 0,