diff --git a/openttd.vcproj b/openttd.vcproj
--- a/openttd.vcproj
+++ b/openttd.vcproj
@@ -253,6 +253,9 @@
 				RelativePath=".\mixer.c">
 			</File>
 			<File
+				RelativePath=".\music.c">
+			</File>
+			<File
 				RelativePath=".\namegen.c">
 			</File>
 			<File
@@ -479,6 +482,9 @@
 				RelativePath=".\mixer.h">
 			</File>
 			<File
+				RelativePath=".\music.h">
+			</File>
+			<File
 				RelativePath=".\network.h">
 			</File>
 			<File