diff --git a/FunKey/board/funkey/rootfs-overlay/etc/asound.conf b/FunKey/board/funkey/rootfs-overlay/etc/asound.conf
new file mode 100644
index 0000000..1ddbac2
--- /dev/null
+++ b/FunKey/board/funkey/rootfs-overlay/etc/asound.conf
@@ -0,0 +1,15 @@
+pcm.monocard{
+  slave.pcm "hw:0"
+  slave.channels 2
+  type route
+  ttable {
+    # Copy both input channels to output channel 1 (Right).
+    0.1 1
+    1.1 1
+    # Send nothing to output channel 0 (Left).
+    0.0 0
+    1.0 0
+  }
+}
+
+pcm.!default monocard