Fix broken printf statements:
* src/main.cpp:49:62: warning: too many arguments for format [-Wformat-extra-args]
*    printf("Usage:\n bpmdetect [switches] [files]\n\n", version);
*
* src/track.cpp:111:57: warning: format ‘%d’ expects argument of type ‘int’, but argument 4 has type ‘double’ [-Wformat=]
*      snprintf(buffer, BPM_LEN, "%05d", (int) dBPM * 100. );

--- bpmdetect/src/main.cpp
+++ bpmdetect/src/main.cpp
@@ -34,6 +34,7 @@
 #endif
 
 #include <getopt.h>
+#include <stdio.h>
 
 #include "track.h"
 #include "trackfmod.h"  // for FMOD system
@@ -46,7 +47,7 @@
 
 void display_help() {
   printf("BPMDetect version %s\n\n", version);
-  printf("Usage:\n bpmdetect [switches] [files]\n\n", version);
+  fputs("Usage:\n bpmdetect [switches] [files]\n\n", stdout);
   printf("Switches:\n");
 #ifndef NO_GUI
   printf("-c --console         - run in console mode\n");
--- bpmdetect/src/track.cpp
+++ bpmdetect/src/track.cpp
@@ -108,7 +108,7 @@
   } else if( format == "000" ) {
     snprintf(buffer, BPM_LEN, "%03d", (int) dBPM );
   } else if( format == "00000" ) {
-    snprintf(buffer, BPM_LEN, "%05d", (int) dBPM * 100. );
+    snprintf(buffer, BPM_LEN, "%05d", static_cast<int>(dBPM * 100.) );
   } else { // all other formats are converted to "0.00"
     snprintf(buffer, BPM_LEN, "%.2f", dBPM );
   }