Splits out the Opus multi-stream encoder and decoder
diff --git a/opus_sources.mk b/opus_sources.mk
index 81eaef0..e4eeb91 100644
--- a/opus_sources.mk
+++ b/opus_sources.mk
@@ -2,6 +2,8 @@
 src/opus_decoder.c \
 src/opus_encoder.c \
 src/opus_multistream.c \
+src/opus_multistream_encoder.c \
+src/opus_multistream_decoder.c \
 src/repacketizer.c
 
 OPUS_SOURCES_FLOAT = \