diff --git a/forge-gui/src/main/java/forge/sound/MusicPlaylist.java b/forge-gui/src/main/java/forge/sound/MusicPlaylist.java
index 8211c4e3e6e..dd22d4cf8ab 100644
--- a/forge-gui/src/main/java/forge/sound/MusicPlaylist.java
+++ b/forge-gui/src/main/java/forge/sound/MusicPlaylist.java
@@ -24,7 +24,7 @@ public enum MusicPlaylist {
                 FilenameFilter filter = new FilenameFilter(){
                     @Override
                     public boolean accept(File file, String name) {
-                        return name.endsWith(".mp3") || name.endsWith(".wav");
+                        return name.endsWith(".mp3") || name.endsWith(".wav") || name.endsWith(".m4a");
                     }
                 };
                 filenames = new File(ForgeConstants.MUSIC_DIR + subDir).list(filter);