Index: uspace/srv/audio/hound/iface.c
===================================================================
--- uspace/srv/audio/hound/iface.c	(revision 5029c788d70370f28e871545dba8965729edd531)
+++ uspace/srv/audio/hound/iface.c	(revision 4b33db8e00bfd70f1180d025176497c8264bab2b)
@@ -135,4 +135,10 @@
 }
 
+static int iface_drain_stream(void *stream)
+{
+	hound_ctx_stream_drain(stream);
+	return EOK;
+}
+
 static int iface_stream_data_read(void *stream, void *buffer, size_t size)
 {
@@ -154,4 +160,5 @@
 	.add_stream = iface_add_stream,
 	.rem_stream = iface_rem_stream,
+	.drain_stream = iface_drain_stream,
 	.stream_data_write = iface_stream_data_write,
 	.stream_data_read = iface_stream_data_read,