Make it easier to navigate in PC by filtering out . prefixed stuff

src/songmenu.c

@@ -78,7 +78,7 @@ static void load_song_list(/*void * p*/) {
 		char *ext;
 		ext = (char *)(strchr(de->name, '.')+1);
 			printf("read entry '%s'\n", de->name);
-			if (strcmp(de->name, ".") && strcmp(de->name, "..")) {
+			if (de->name[0] != '.') {
 				mutex_lock(mut);
 			/*if( (!stricmp(ext,"mpg"))||(!stricmp(ext,"mpeg"))||(!stricmp(ext,"pss"))
     			||(!stricmp(ext,"sfd"))||(!stricmp(ext,"m2v"))||(!stricmp(ext,"m1v"))