Add audio support for the DeckLink inputs.

[nageru] / bmusb

diff --git a/bmusb b/bmusb
index 30a75fd8110601c89ecc7c1a0832a96878917cd4..29a8343d5cbbfdfc913b18fca7da0e14f0472f32 160000 (submodule)
--- a/bmusb
+++ b/bmusb
@@ -1 +1 @@
-Subproject commit 30a75fd8110601c89ecc7c1a0832a96878917cd4
+Subproject commit 29a8343d5cbbfdfc913b18fca7da0e14f0472f32