diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..8a218ef
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "wav2png"]
+	path = wav2png
+	url = https://github.com/beschulz/wav2png.git
diff --git a/wav2png b/wav2png
new file mode 160000
index 0000000..ed5783e
--- /dev/null
+++ b/wav2png
@@ -0,0 +1 @@
+Subproject commit ed5783e9643d6dcfe6b8ac57a9f6249063179ea2