increment playlist version on update, so clients know to update

src/command.c

@@ -317,6 +317,7 @@ int handleSearch(FILE * fp, unsigned int * permission, int argArrayLength,
 int handleUpdate(FILE * fp, unsigned int * permission, int argArrayLength, 
 		char ** argArray) 
 {
+	incrPlaylistVersion(); 
         return updateMp3Directory(fp);
 }
 

src/playlist.h

@@ -93,4 +93,6 @@ void playPlaylistIfPlayerStopped();
 
 int seekSongInPlaylist(FILE * fp, int song, float time);
 
+void incrPlaylistVersion();
+
 #endif