meson: install new audio-prelude.h
diff --git a/gst-libs/gst/audio/meson.build b/gst-libs/gst/audio/meson.build
index 86f49b9..ace64fe 100644
--- a/gst-libs/gst/audio/meson.build
+++ b/gst-libs/gst/audio/meson.build
@@ -44,6 +44,7 @@
 
 # FIXME: check headers
 audio_headers = audio_mkenum_headers + [
+  'audio-prelude.h',
   'gstaudiobasesink.h',
   'gstaudiobasesrc.h',
   'gstaudiocdsrc.h',