Update wav2sketch.c

extras/wav2sketch/wav2sketch.c

 	total_length += arraylen;
 
 	// output a minimal header, just the length, #bits and sample rate
-	fprintf(outh, "extern const unsigned int AudioSample%s[%d];\n", samplename, arraylen);
+	fprintf(outh, "extern const unsigned int AudioSample%s[%d];\n", samplename, arraylen);	
 	fprintf(out, "// Converted from %s, using %d Hz, %s encoding\n", filename, rate,
 	  (pcm_mode ? "16 bit PCM" : "u-law"));
-	fprintf(out, "const unsigned int AudioSample%s[%d] = {\n", samplename, arraylen);
+	fprintf(out, "PROGMEM const unsigned int AudioSample%s[%d] = {\n", samplename, arraylen);
 	fprintf(out, "0x%08X,", length | (format << 24));
 	wcount = 1;
 
 		if (outh == NULL) die("unable to write %s\n", buf);
 		fprintf(outh, "%s", title);
 		fprintf(outc, "%s", title);
+		fprintf(outc, "#include <Arduino.h>\n");
 		fprintf(outc, "#include \"%s\"\n\n", buf);
 		wav2c(fp, outc, outh);
 		//wav2c(fp, stdout, stdout);