Free Warp Flute - Super Mario Advance 4: Super Mario Bros. 3
16 Sep 2006, ID#9241 Free Warp Flute
To get a warp flute you must go to the gray castle in world 1 where you fight the brown repile, Boom-boom. Get a p-wing or a racoon leaf. On floor 1 where the last ? Is make a running jump on the beeping noise onto the ? And fly while facing and hitting the wall and you will go into a crack in the wall and keep going right til' you hear the bumping noise meaning you've hit the wall. Press the up arrow on the D-pad and you will fall and if you see a brown chest that means you did it, the flute is in there.
Get 100 coins for 1-up
On world 8 Bowser is hard
On world 7 the king of peach's castle transformed into Yoshi
Hope this helped.