diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..df26573
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "vendor/MusicDecrypto"]
+	path = vendor/MusicDecrypto
+	url = https://github.com/davidxuang/MusicDecrypto
diff --git a/vendor/MusicDecrypto b/vendor/MusicDecrypto
new file mode 160000
index 0000000..a6b7556
--- /dev/null
+++ b/vendor/MusicDecrypto
@@ -0,0 +1 @@
+Subproject commit a6b7556e449e3f379bddef9568fb0129b9b516c6