include: Add asptlb.idl.
diff --git a/.gitignore b/.gitignore
index d2ba32b..793bf5a 100644
--- a/.gitignore
+++ b/.gitignore
@@ -135,6 +135,7 @@
 include/activscp.h
 include/amstream.h
 include/amvideo.h
+include/asptlb.h
 include/audioclient.h
 include/audiopolicy.h
 include/austream.h