Refactored WAV code in to its own file

Signed-off-by: Mahyar Koshkouei <deltabeard@users.noreply.github.com>

source/all.h

@@ -0,0 +1,12 @@
+#include <errno.h>
+
+/* Channel to play music on */
+#define CHANNEL	0x08
+
+/* Adds extra debugging text */
+#define DEBUG	0
+
+/* Prints more error information */
+#define err_print(err) \
+	do { fprintf(stderr, "\nError %d:%s(): %s %s\n", __LINE__, __func__, \
+			err, strerror(errno)); } while (0)