diff --git a/core/src/main/assets/game.mp3 b/core/src/main/assets/game.mp3
deleted file mode 100644
index 85b875b4f..000000000
Binary files a/core/src/main/assets/game.mp3 and /dev/null differ
diff --git a/core/src/main/assets/game.ogg b/core/src/main/assets/game.ogg
new file mode 100644
index 000000000..61795d48f
Binary files /dev/null and b/core/src/main/assets/game.ogg differ
diff --git a/core/src/main/assets/surface.mp3 b/core/src/main/assets/surface.mp3
deleted file mode 100644
index 612dafa3e..000000000
Binary files a/core/src/main/assets/surface.mp3 and /dev/null differ
diff --git a/core/src/main/assets/surface.ogg b/core/src/main/assets/surface.ogg
new file mode 100644
index 000000000..3227420c2
Binary files /dev/null and b/core/src/main/assets/surface.ogg differ
diff --git a/core/src/main/assets/theme.mp3 b/core/src/main/assets/theme.mp3
deleted file mode 100644
index ff82dba1a..000000000
Binary files a/core/src/main/assets/theme.mp3 and /dev/null differ
diff --git a/core/src/main/assets/theme.ogg b/core/src/main/assets/theme.ogg
new file mode 100644
index 000000000..000806244
Binary files /dev/null and b/core/src/main/assets/theme.ogg differ
diff --git a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/Assets.java b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/Assets.java
index 0e9a56258..79dcae763 100644
--- a/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/Assets.java
+++ b/core/src/main/java/com/shatteredpixel/shatteredpixeldungeon/Assets.java
@@ -126,9 +126,9 @@ public class Assets {
 	public static final String FONT1X       = "font1x.png";
 	public static final String FONT2X       = "font2x.png";
 	
-	public static final String THEME	= "theme.mp3";
-	public static final String TUNE		= "game.mp3";
-	public static final String HAPPY	= "surface.mp3";
+	public static final String THEME	= "theme.ogg";
+	public static final String TUNE		= "game.ogg";
+	public static final String HAPPY	= "surface.ogg";
 	
 	public static final String SND_CLICK	= "snd_click.mp3";
 	public static final String SND_BADGE	= "snd_badge.mp3";