Index: emu/mid.c
===================================================================
--- emu/mid.c	(revision 56746cf7ede4e619d103f5532f893d14cf9ccf8d)
+++ emu/mid.c	(revision 379ffd96c2e3a24d7829c494c50187a6ce2ae14a)
@@ -28,5 +28,5 @@
 #define REG_TDR_RDR 3
 
-#define BUF_SZ 128
+#define BUF_SZ 256
 
 typedef struct {
@@ -105,5 +105,8 @@
 }
 
-static void midi_callback(double timeStamp, const unsigned char* message, void *userData) {
+static void midi_callback(double timeStamp, const unsigned char* message, size_t size, void *userData) {
+	(void) size;
+	(void) userData;
+
 	ver2("Timestamp %f\n", timeStamp);